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Characterization Of Laser-Cladded Aisi 420 Martensitic Stainless Steel For Additive Manufacturing Applications, Mohammad Khurshed-Ul Alam
Characterization Of Laser-Cladded Aisi 420 Martensitic Stainless Steel For Additive Manufacturing Applications, Mohammad Khurshed-Ul Alam
Electronic Theses and Dissertations
Laser cladding is an additive manufacturing (AM) process that uses lasers to melt and deposit metallic powders in layer by layer to coat a substrate or to build three dimensional object. However, the AM industry encounters problems in handling residual stresses in the cladded parts or coating that lead to high hardness and distortion. Also, anisotropic properties developed in the laser-cladded AM parts are a challenge to use them as a functional component. This study aims to understand those problems with the laser-cladding AM process using AISI 420 martensitic stainless steel (MSS) powder in a coaxial direct powder deposition method. …
Wear And Fatigue Behaviour Of Additive Manufactured Titanium With Tib Particles, Liza-Anastasia Dicecco
Wear And Fatigue Behaviour Of Additive Manufactured Titanium With Tib Particles, Liza-Anastasia Dicecco
Electronic Theses and Dissertations
While titanium remains an attractive candidate in lightweighting applications, it is often restricted in use due of its poor tribological behaviour and inferior machinability characteristics, leading to its higher relative cost. To address these shortcomings, manufacturers are turning towards alternate, non-conventional manufacturing methods such as additive manufacturing (AM). The mechanical and microstructural properties of alpha, near-commercially pure, titanium made from a novel AM process, termed plasma transferred arc solid free form fabrication, is studied in this research work. Low amounts of titanium-boride (TiB) particles are of interest in as-received samples for their role as a stiffener and strengthener, which can …