Linear Friction Welding of Ti-6Al-4V Alloy: Microstructure Characterization

Tie Jun Ma; Wen Ya Li; Q.Z. Xu; Y. Zhang; Jing Long Li; S.Q. Yang

doi:10.4028/www.scientific.net/MSF.580-582.405

Paper Titles

Mechanical and Microstructural Properties of Dissimilar Friction Spot Welded Aluminum Alloy
p.389

Hybrid Friction Stir Welding of Carbon Steel
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Remote Resistance Welding of Zr-4 Endplate for DUPIC Fuel Fabrication
p.397

Numerical Study on the Effectiveness of Fixture and Pre-Strain for Reduction of Welding Distortion
p.401

Linear Friction Welding of Ti-6Al-4V Alloy: Microstructure Characterization
p.405

Liquid Penetration Induced Cracking in Mg-Alloy Spot Welds
p.409

The Failure Strength Evaluation on Resistance Welding Mixed Adhesive Bonding
p.413

Residual Stress Relief and Redistribution of Welded Metals by Vibratory Stress Relaxation
p.419

A Comparative Evaluation of Friction-Welded and Brazed Ti and AISI 321 Stainless Steel Joints
p.423

HomeMaterials Science ForumMaterials Science Forum Vols. 580-582Linear Friction Welding of Ti-6Al-4V Alloy:...

Linear Friction Welding of Ti-6Al-4V Alloy: Microstructure Characterization

Abstract:

Ti-6Al-4V was successfully jointed by linear friction welding (LFW). A sound weld of thickness of 65-115 $m was obtained under the present conditions. The weld consisted of the superfine α+β structure, which is associated with the rapid heating and cooling processes involved in LFW. The thermomechanically affected zone (TMAZ) was limited and comprised of the severely deformed α and β grains. In the flash, a gradual microstructure was formed from the weld edge to the flash edge. A martensite structure (α’) was formed besides the acicular α+β in the flash edge owing to the fast cooling rate.