Effects of α plus β phase deformation on microstructure, fatigue and dwell fatigue behavior of a near alpha titanium alloy

被引：27
|
作者：
Chandravanshi, Vivek [1 ]
Prasad, Kartik [1 ]
Singh, Vajinder [1 ]
Bhattacharjee, Amit [1 ]
Kumar, Vikas [1 ]
机构：
[1] Def Met Res Lab, Hyderabad 500058, Andhra Pradesh, India
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2016年 / 91卷
关键词：
Near alpha titanium alloy; IMI; 834; Thermo-mechanical processing; Dwell fatigue; Micro-texture; CRYSTAL PLASTICITY FE; CRACK-GROWTH; CRYSTALLOGRAPHIC ORIENTATION; SENSITIVE FATIGUE; FRACTURE FACETS; TI-6242; ALLOY; TI ALLOYS; CREEP; MECHANISMS; NUCLEATION;
D O I：
10.1016/j.ijfatigue.2016.05.023
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In the present study, a near alpha titanium alloy, similar to IMI 834 alloy, was melted and thermo-mechanically processed. Different amount of deformation was imparted to the alloy in the alpha-beta region and thereafter tensile, fatigue, and dwell fatigue properties were evaluated in a standard heat treatment condition. Higher alpha-beta deformation resulted into a more refined microstructure. Further, based on EBSD analysis, it was found that higher alpha-beta deformation led to a higher fatigue and dwell fatigue life, along with dwell fatigue life debit as compared to relatively lesser deformed specimen mainly due to hard (0001) basal pole orientations, approximately, parallel to the loading axis. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：100 / 109
页数：10
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