Microstructure Characterization of Laser Welded Near-β Titanium Alloy ‘TLM’ under Different Process Conditions

Alexander Buddery; Gui Wang; Zhen Tao Yu; Matthew S. Dargusch; Samih Nabulsi

doi:10.4028/www.scientific.net/MSF.654-656.2146

Paper Titles

Biomedical Titanium Alloy with Ultralow Elastic Modulus and High Strength
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Effect of Oxygen Addition on Isothermal Omega Phase Stability in Ti-29Nb-13Ta-4.6Zr
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Effect of Y₂O₃ on Mechanical Properties of Ti-29Nb-13Ta-4.6Zr for Biomedical Applications
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Improvement of Mechanical Performance and Biocompatibility of Spinal Implant Rod Made of Beta-Type Ti-Nb-Ta-Zr Alloy
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Microstructure Characterization of Laser Welded Near-β Titanium Alloy ‘TLM’ under Different Process Conditions
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Effect of Aging on Mechanical Properties of Ti-Mo-Al Biomedical Shape Memory Alloy
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Self-Accommodation Morphology in Ti-Nb-Al Shape Memory Alloy
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Fabrication of Ti-Based Biodegradable Material Composites Prepared by Spark Plasma Sintering Method
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Calcium Phosphate Coating on Titanium Using Dry Process
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HomeMaterials Science ForumMaterials Science Forum Vols. 654-656Microstructure Characterization of Laser Welded...

Microstructure Characterization of Laser Welded Near-β Titanium Alloy ‘TLM’ under Different Process Conditions

Abstract:

The microstructures of laser welds of the near-β titanium alloy TLM were studied for substrates in the as hot rolled, solution treated and solution treated and aged conditions. Irrespective of substrate condition the fusion zone consists of a cellular β structure. Trends in bulk hardness of the various conditions seem to be carried through into the weld consistently across the profile. The hardness in the fusion zone remained similar to that of the bulk. However, a drop in hardness occurs in the HAZ. Lath that formed around the hardness indent of the fusion zone and HAZ suggest that the weld undergoes a martensitic transformation to α" during deformation.