Linear Friction Welding of a Forged Near-α Titanium Alloy

被引：10

作者：

Dalgaard, Elvi ^{[1
]}

Wanjara, Priti ^{[2
]}

Gholipour, Javad ^{[2
]}

Jonas, John J. ^{[1
]}

机构：

[1] McGill Univ, 3610 Univ St, Montreal, PQ, Canada

[2] Inst Aerosp Res, Aerosp Mfg Technol Ctr, Natl Res Council Canada, Montreal, PQ, Canada

来源：

THERMEC 2011, PTS 1-4 | 2012年 / 706-709卷

关键词：

linear friction welding; IMI834; aerospace; titanium alloys; texture; TI-6AL-4V;

D O I：

10.4028/www.scientific.net/MSF.706-709.211

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

IMI834 (Ti-5.8Al-4Sn-3.5Zr-0.7Nb-0.5Mo-0.35Si) is a high-tech near-alpha titanium alloy with improved creep resistance and mechanical property retention at temperatures up to 600 degrees 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 alpha+beta 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.

引用

页码：211 / +

页数：2

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