Linear friction welding of a forged near-α titanium alloy

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Proceedings titleMaterials Science Forum
Conference7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011, 1 August 2011 through 5 August 2011, Quebec City, QC
Pages211216; # of pages: 6
SubjectAerospace; Axial pressures; Base material; Compressor disks; Electron back scatter diffraction; Fatigue strength; IMI834; Linear friction welding; Phase fractions; Thermomechanically affected zones; Weld zone; Weldments; Aerospace industry; Friction welding; Textures; Tin; Titanium alloys; Welding; Zirconium; Alloys; Cerium alloys; Creep; Creep resistance; Friction; Molybdenum; Niobium; Titanium; Tribology; Creep resistance; Titanium alloys
AbstractIMI834 (Ti-5.8Al-4Sn-3.5Zr-0.7Nb-0.5Mo-0.35Si) is a high-tech near-α titanium alloy with improved creep resistance and mechanical property retention at temperatures up to 600°C [1]. It is used in the aerospace industry for compressor disks and blades due to its excellent balance between creep resistance and fatigue strength [2]. The linear friction welding (LFW) behaviour of IMI834 displaying an initial bimodal α+β microstructure was investigated using varying axial pressures during welding. Electron backscatter diffraction (EBSD) was used to characterize the texture and phase fraction of the welded IMI834 samples in the weld zone (WZ) and thermomechanically affected zones (TMAZ) in relation to the base material. Based on microhardness evaluation of the weldments, the WZ was determined to be slightly harder than the base material. © 2012 Trans Tech Publications, Switzerland.
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AffiliationNational Research Council Canada (NRC-CNRC); Aerospace
Peer reviewedYes
NPARC number21269251
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Record identifier712c43d9-4b42-494d-b2b8-43e1fd61aef9
Record created2013-12-12
Record modified2016-05-09
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