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Metallurgy Commons™

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2016

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Articles 61 - 90 of 133

Full-Text Articles in Metallurgy

Mould Corner Radius-Related Flow And Thermal States In Bloom Continuous Casting With A Swirling Flow Nozzle, Shaoxiang Li, Peng Lan, Haiyan Tang, Chenwei Du, Yuan Ji, Jiaquan Zhang Oct 2016

Mould Corner Radius-Related Flow And Thermal States In Bloom Continuous Casting With A Swirling Flow Nozzle, Shaoxiang Li, Peng Lan, Haiyan Tang, Chenwei Du, Yuan Ji, Jiaquan Zhang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


The Permeability And Flow Field In The Mushy Zone During Solidification Under Ultrasonic Treatment, Xiaopeng Zhang Oct 2016

The Permeability And Flow Field In The Mushy Zone During Solidification Under Ultrasonic Treatment, Xiaopeng Zhang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Crystal Growth Patterns In Undercooled Co67sn33 Hypereutectic Alloy Containing Minor Nb, Jilong Kang, J. F. Li Oct 2016

Crystal Growth Patterns In Undercooled Co67sn33 Hypereutectic Alloy Containing Minor Nb, Jilong Kang, J. F. Li

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Modeling And Simulation Of Dendrite And Porosity Evolution During Solidification In The Molten Pool Of Al–Cu Alloys, Cheng Gu, Yanhong Wei, Xiaohong Zhan Oct 2016

Modeling And Simulation Of Dendrite And Porosity Evolution During Solidification In The Molten Pool Of Al–Cu Alloys, Cheng Gu, Yanhong Wei, Xiaohong Zhan

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Modeling And Simulation Of Influence Of Solidification Velocity On The Structure Of Lotus-Type Porous Metals, Yuan Liu, Yang Qianqian, Li Yanxiang Oct 2016

Modeling And Simulation Of Influence Of Solidification Velocity On The Structure Of Lotus-Type Porous Metals, Yuan Liu, Yang Qianqian, Li Yanxiang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Dispersion Of Particles In Liquid Metal Using Contactless Electromagnetic Stirring, Koulis A. Pericleous, Valdis Bojarevics, Georgi S. Djambazov Oct 2016

Dispersion Of Particles In Liquid Metal Using Contactless Electromagnetic Stirring, Koulis A. Pericleous, Valdis Bojarevics, Georgi S. Djambazov

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Particle Pushing: Reexamine The Thermodynamic Criterion, Qingyou Han Oct 2016

Particle Pushing: Reexamine The Thermodynamic Criterion, Qingyou Han

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Liquid/Substrate Interface For The Heterogeneous Nucleation In Grain Refinement Of Al Alloys, Yanfeng Han, Jun Xu, Hanlong Zhang, Yongbing Dai, Jiao Zhang, Jun Wang, Baode Sun Oct 2016

Liquid/Substrate Interface For The Heterogeneous Nucleation In Grain Refinement Of Al Alloys, Yanfeng Han, Jun Xu, Hanlong Zhang, Yongbing Dai, Jiao Zhang, Jun Wang, Baode Sun

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Study On Growth Model Of Cellular Automata Method In Solidification Simulation, Zhao Guo, Jian-Xin Zhou, Ya-Jun Yin, Chang-Chang Liu Oct 2016

Study On Growth Model Of Cellular Automata Method In Solidification Simulation, Zhao Guo, Jian-Xin Zhou, Ya-Jun Yin, Chang-Chang Liu

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Molecular Dynamics Study Of Growth Of Silicon From Melt And Formation Of Dislocation, Naigen Zhou, Chi Zhang, Bo Liu, Rongyao Luo, Ke Li, Lang Zhou Oct 2016

Molecular Dynamics Study Of Growth Of Silicon From Melt And Formation Of Dislocation, Naigen Zhou, Chi Zhang, Bo Liu, Rongyao Luo, Ke Li, Lang Zhou

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Integrated Computational Materials Engineering In Quenching And Tempering Of Extra-Large Rotors, Mengnie V. Li, Ying Yang, Hengyong Bu, Xuejiao Zhang Oct 2016

Integrated Computational Materials Engineering In Quenching And Tempering Of Extra-Large Rotors, Mengnie V. Li, Ying Yang, Hengyong Bu, Xuejiao Zhang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Fem Simulation Of Laser Shock Processing On Surface Morphology And Residual Stress Field Of Ti-17 Titanium Alloy With Different Laser Impact Times, Rujian Sun, Ying Zhu, Wei Guo, Peng Peng Oct 2016

Fem Simulation Of Laser Shock Processing On Surface Morphology And Residual Stress Field Of Ti-17 Titanium Alloy With Different Laser Impact Times, Rujian Sun, Ying Zhu, Wei Guo, Peng Peng

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Mpfem Simulation On 2d Compaction Of Core–Shell Particulate Composites, Yu Liu, Fen Huang, Peng Han, Xizhong An, Haitao Fu Oct 2016

Mpfem Simulation On 2d Compaction Of Core–Shell Particulate Composites, Yu Liu, Fen Huang, Peng Han, Xizhong An, Haitao Fu

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Atomistic Characterization Of Solid–Liquid Interfaces In Cu–Ni Binary System, Chen Qi, L. T. Kong, J. F. Li Oct 2016

Atomistic Characterization Of Solid–Liquid Interfaces In Cu–Ni Binary System, Chen Qi, L. T. Kong, J. F. Li

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Calphad-Based Materials Genome And Its Applications To Additive Manufacturing, Wei Xiong Oct 2016

Calphad-Based Materials Genome And Its Applications To Additive Manufacturing, Wei Xiong

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Thermodynamic And Compositional Assessment Of Q-Phase In Al–Si–Mg–Cu Alloys Using 3dapt And In-Situ Tem, Andrew Bobel, Weiwei Zhang, Nick Hatcher, Qigue Wang, Mike Walker, Greg Olson Oct 2016

Thermodynamic And Compositional Assessment Of Q-Phase In Al–Si–Mg–Cu Alloys Using 3dapt And In-Situ Tem, Andrew Bobel, Weiwei Zhang, Nick Hatcher, Qigue Wang, Mike Walker, Greg Olson

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Ab Initio Simulations To Investigate The Correlation Between The Local Melt Structure And Segregation Behavior Of Fe, V, Ti, And Si In Liquid Al, Jiao Zhang, Yongbing Dai Oct 2016

Ab Initio Simulations To Investigate The Correlation Between The Local Melt Structure And Segregation Behavior Of Fe, V, Ti, And Si In Liquid Al, Jiao Zhang, Yongbing Dai

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Precipitation Modeling Of Multi-Component Commercial Alloys, Weisheng Cao, Fan Zhang, Shuanglin Chen, Chuan Zhang, Jun Zhu Oct 2016

Precipitation Modeling Of Multi-Component Commercial Alloys, Weisheng Cao, Fan Zhang, Shuanglin Chen, Chuan Zhang, Jun Zhu

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Recent Advances In Four-Dimensional Studies Of Advanced Materials And Processing, Jiawei Mi Oct 2016

Recent Advances In Four-Dimensional Studies Of Advanced Materials And Processing, Jiawei Mi

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Thermal Simulation Technology For Solidification Process Of Metals, Qijie Zhai, Honggang Zhong, Renxing Li, Hongxing Zheng Oct 2016

Thermal Simulation Technology For Solidification Process Of Metals, Qijie Zhai, Honggang Zhong, Renxing Li, Hongxing Zheng

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Physical Simulation Of Hot Plastic Deformation Of Tibw/Ti Composites, Lin Geng Oct 2016

Physical Simulation Of Hot Plastic Deformation Of Tibw/Ti Composites, Lin Geng

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Physical Simulation And Development Of Processing Of High-Strength Steels During 25 Years, Mahesh Chandra Somani, David Arthur Porter, Leo Pentti Karjalainen Oct 2016

Physical Simulation And Development Of Processing Of High-Strength Steels During 25 Years, Mahesh Chandra Somani, David Arthur Porter, Leo Pentti Karjalainen

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Slm Processing-Microstructure-Mechanical Property Correlation In An Aluminum Alloy Produced By Additive Manufacturing, Bryce Abstetar Oct 2016

Slm Processing-Microstructure-Mechanical Property Correlation In An Aluminum Alloy Produced By Additive Manufacturing, Bryce Abstetar

Graduate Theses & Non-Theses

Additive manufacturing has become a highly researched topic in recent years all over the world. The current research evaluates the merits of additive manufacturing based on the mechanical, microstructural, and fracture properties of additive manufactured AlSi10Mg test specimens. The additive manufactured build plates consisted of tensile and fatigue test specimens. They were printed in the 0°, 30°, 60°, and 90° orientations relative to the build platform. Tensile and dynamic fatigue tests were conducted followed by microstructural characterization and fracture analysis. A wrought 6061 T6 aluminum alloy was also tested for comparison. Tensile tests revealed similar ultimate tensile strengths for all …


Protective Conversion Coating On Mixed-Metal Substrates And Methods Thereof, Matthew O'Keefe, Surender Maddela Sep 2016

Protective Conversion Coating On Mixed-Metal Substrates And Methods Thereof, Matthew O'Keefe, Surender Maddela

Materials Science and Engineering Faculty Research & Creative Works

Mixed-metal automotive vehicle bodies-in-white comprising ferrous metal surfaces, zinc surfaces, aluminum alloy surfaces, and magnesium alloy surfaces are cleaned and immersed in an aqueous bath comprising an adhesion promoter and an aqueous electrocoat bath (the adhesion promoter may be in the electrocoat bath. The adhesion promoter, which may be a cerium salt, is selected to react with each metal in the body surfaces to form an oxide layer that provides corrosion resistance for the surface and adherence for the deposited polymeric paint coating. The body is cathodic in the electrocoat deposition.


Modeling And Experimental Investigation Of Pre-Mixed Multi-Powder Flow In Fabricating Functional Gradient Material By Laser Metal Deposition Process, Wei Li, Jingwei Zhang, Sreekar Karnati, Yunlu Zhang, Frank W. Liou, Joseph William Newkirk, Karen M. Brown Taminger, W. L. Seufzer Aug 2016

Modeling And Experimental Investigation Of Pre-Mixed Multi-Powder Flow In Fabricating Functional Gradient Material By Laser Metal Deposition Process, Wei Li, Jingwei Zhang, Sreekar Karnati, Yunlu Zhang, Frank W. Liou, Joseph William Newkirk, Karen M. Brown Taminger, W. L. Seufzer

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Laser Metal Deposition (LMD) is an effective process to fabricate Functionally Graded Material (FGM) from pre-mixed powders. Since the supplied multi-powder directly affects the deposited FGM’s composition, investigation on Pre-Mixed Multi-Powder (PMMP) flow during LMD is greatly needed. This paper presents a comprehensive numerical PMMP flow model. By solving discrete particle force balance equations coupled with continuity equations and momentum equations for carrier gas, the dynamic behavior of PMMP flow through powder feeder tube and out of nozzle was calculated. With this model, the particle sizes of multi-powder were optimized to obtain considered FGM composition. To verify the modeling results, …


Effect Of Powder Particle Size On The Fabrication Of Ti-6al-4v Using Laser Metal Deposition From Elemental Powder Mixture, Xueyang Chen, Lei Yan, Wei Li, Frank W. Liou, Joseph William Newkirk Aug 2016

Effect Of Powder Particle Size On The Fabrication Of Ti-6al-4v Using Laser Metal Deposition From Elemental Powder Mixture, Xueyang Chen, Lei Yan, Wei Li, Frank W. Liou, Joseph William Newkirk

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Direct Laser Metal Deposition (LMD) was used to fabricate thin-wall Ti-6Al-4V using the powder mixture of Ti-6 wt.%Al-4 wt.%V. Scanning electron microscopy (SEM), optical microscopy (OM) and energy dispersive spectroscopy (EDS) were employed to examine the chemical composition and microstructure of the as-deposited sections. Vickers hardness tests were then applied to characterize the mechanical properties of the deposit samples which were fabricated using pre-mixed elemental powders. The EDS line scans indicated that the chemical composition of the samples was homogenous across the deposit. X-ray diffraction (XRD) was used for the phase identification. After significant analysis, some differences were observed among …


Proposed Hybrid Processes For Part Building Using Fusion Welding And Friction Stir Processing, Megan A. Gegesky, Frank W. Liou, Joseph William Newkirk Aug 2016

Proposed Hybrid Processes For Part Building Using Fusion Welding And Friction Stir Processing, Megan A. Gegesky, Frank W. Liou, Joseph William Newkirk

Mechanical and Aerospace Engineering Faculty Research & Creative Works

It has been shown that a hybrid laser additive manufacturing and friction stir processing can deposit components with forged-like structures. This paper reports a hybrid fusion welding and friction stir process to create parts with quality structures. Combining traditional fusion welding and friction stir processing techniques for non-weldable aluminum alloys could facilitate the joining of difficult geometries in manufactured parts. This research illustrates mechanical property changes for non-weldable and weldable aluminum alloys. The Vickers hardness, and microhardness in the case of AA5052-H32, tensile strength and corrosion resistance of four processing states: base material, fusion welded material, friction stir welded material, …


Rapid Grain Boundary Mobility At Ambient Temperatures, Jarrod M. Lund, R Adam Bilodeau, Rebecca K. Kramer Aug 2016

Rapid Grain Boundary Mobility At Ambient Temperatures, Jarrod M. Lund, R Adam Bilodeau, Rebecca K. Kramer

The Summer Undergraduate Research Fellowship (SURF) Symposium

Understanding and measuring the influence of grain boundaries (planar defects in the crystalline structure of materials) and their motion has become a dominant aspect in materials research, with applications in additive manufacturing, fatigue prevention, and material modeling. However, modeling grain boundaries and grain boundary mobility (GBM) is difficult due to the high temperatures or external stresses, imaging solutions compatible with the material system, and long time-scales required to create measurable experimental results. In this paper, we introduce a novel material system that allows for easy and fast visualization of GBM. A drop of liquid metal eutectic gallium indium (eGaIn) placed …


Study On Oil Palm Fresh Fruit Bunch Bruise In Harvesting And Transportation To Quality, Andreas Wahyu Krisdiarto, Lilik Sutiarso Aug 2016

Study On Oil Palm Fresh Fruit Bunch Bruise In Harvesting And Transportation To Quality, Andreas Wahyu Krisdiarto, Lilik Sutiarso

Makara Journal of Technology

There are losses of production due to oil palm field’s material handling. Activities that may raise the losses are harvesting and transportation, which may cause bruise and damage to fruit. This research was aimed to learn the bruise of fresh fruit bunch (FFB) phenomenon in harvesting and transportation. Method used in this research was measuring the bruise area resulted by FFB falling when harvested, loading (throwing up) FFB to truck bin, and transporting using truck. These data, coupled with weight of bruised fruit, were calculated to get FFB bruise index. Each FFB bruise index is related to potential free fatty …


Automatic Arrhythmia Beat Detection: Algorithm, System, And Implementation, Wisnu Jatmiko, I Md. Agus Setiawan, Muhammad Ali Akbar, Muhammad Eka Suryana, Yulistiyan Wardhana, Muhammad Febrian Rachmadi Aug 2016

Automatic Arrhythmia Beat Detection: Algorithm, System, And Implementation, Wisnu Jatmiko, I Md. Agus Setiawan, Muhammad Ali Akbar, Muhammad Eka Suryana, Yulistiyan Wardhana, Muhammad Febrian Rachmadi

Makara Journal of Technology

Cardiac disease is one of the major causes of death in the world. Early diagnose of the symptoms depends on abnormality on heart beat pattern, known as Arrhythmia. A novel fuzzy neuro generalized learning vector quantization for automatic Arrhythmia heart beat classification is proposed. The algorithm is an extension from the GLVQ algorithm that employs a fuzzy logic concept as the discriminant function in order to develop a robust algorithm and improve the classification performance. The algorithm is tested against MIT-BIH arrhythmia database to measure the performance. Based on the experiment result, FN-GLVQ is able to increase the accuracy of …