Effect of Duplex Aging on Low Cycle Fatigue Behavior in Ti-10V-2Fe-3Al Alloy

被引：0
|
作者：
Chen Wei [1 ,2 ]
Sun Qiaoyan [2 ]
Xiao Lin [2 ]
Sun Jun [2 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Aerosp, Key Lab Strength & Vibrat, Minist Educ, Xian 710049, Peoples R China
[2] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2012年 / 41卷 / 11期
关键词：
Ti-10V-2Fe-3Al alloy; aging; low cycle fatigue; microstructure; MICROSTRUCTURE; TITANIUM; TENSILE; DEFORMATION; FRACTURE; GRAIN;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of duplex aging on low cycle fatigue behavior of Ti-10V-2Fe-3Al alloys was investigated. The cyclic stress response curves show that the cyclic softening occurs at the high strain amplitude of 1.5%, 1.2% and 1.0%. However, when the strain amplitude decreases to 0.8% and 0.6%, cyclic stress saturation appears. Low cycle fatigue life of duplex aging is similar to that of simplex aging. The relationship between cycle total strain amplitude and fatigue life fits to classic Coffin-Manson equation. The fractography analyses suggest that transgranular fracture with well-developed fatigue striations is the predominant failure mode. The plastic deformation traces and secondary cracks are also observed. TEM examination reveals that fatigue deformed microstructures are homogeneous for both duplex aging and simplex aging. Due to shortening operated time and saving energy, duplex aging is more beneficial to actual industrial production than simplex aging.
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页码：1911 / 1916
页数：6
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