Correlation between microstructure evolution and mechanical response in a moderately low stacking-fault-energy austenitic Fe–Mn–Si–Al alloy during low-cycle fatigue deformation

2021 ◽  
pp. 141766
Author(s):  
Qi Yang ◽  
Qidi Sun ◽  
Weitao Yang ◽  
Qingguo Hao ◽  
Xiaodong Wang ◽  
...  
Keyword(s):  
Microstructure Evolution ◽  
Mechanical Response ◽  
Low Cycle Fatigue ◽  
Stacking Fault ◽  
Stacking Fault Energy ◽  
Al Alloy ◽  
Cycle Fatigue ◽  
Fatigue Deformation

On the microstructure evolution during low cycle fatigue deformation of wrought ATI 718Plus alloy

2020 ◽  
Vol 798 ◽  
pp. 140132
Author(s):  
Qiqi Qi ◽  
Hongjun Zhang ◽  
Chenxi Liu ◽  
Qianying Guo ◽  
Yongchang Liu
Keyword(s):  
Microstructure Evolution ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue ◽  
Fatigue Deformation

LOW CYCLE FATIGUE BEHAVIOR OF Zn-22Al ALLOY IN SUPERPLASTIC REGION AND NON-SUPERPLASTIC REGION

2008 ◽  
Vol 22 (31n32) ◽  
pp. 5477-5482 ◽  
Author(s):  
ATSUMICHI KUSHIBE ◽  
TSUTOMU TANAKA ◽  
YORINOBU TAKIGAWA ◽  
KENJI HIGASHI
Keyword(s):  
Fatigue Crack ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Low Cycle Fatigue ◽  
Fatigue Behavior ◽  
Crack Tip ◽  
The Other ◽  
Al Alloy ◽  
Cycle Fatigue ◽  
Secondary Cracks

The crack propagation properties for ultrafine-grained Zn -22 wt % Al alloy during low cycle fatigue (LCF) in the superplastic region and the non-superplastic region were investigated and compared with the corresponding results for several other materials. With the Zn - 22 wt % Al alloy, it was possible to conduct LCF tests even at high strain amplitudes of more than ±5%, and the alloy appeared to exhibit a longer LCF lifetime than the other materials examined. The fatigue life is higher in the superplastic region than in the non-superplastic region. The rate of fatigue crack propagation in the superplastic region is lower than that in the other materials in the high J-integral range. In addition, the formation of cavities and crack branching were observed around a crack tip in the supereplastic region. We therefore conclude that the formation of cavities and secondary cracks as a result of the relaxation of stress concentration around the crack tip results in a reduction in the rate of fatigue crack propagation and results in a longer fatigue lifetime.

scholarly journals Low cycle fatigue behavior and microstructure evolution of a novel Fe-22Cr-15Ni austenitic heat-resistant steel

2020 ◽  
Vol 9 (6) ◽  
pp. 14388-14400
Author(s):  
Lianyong Xu ◽  
Shangqing Yang ◽  
Lei Zhao ◽  
Yongdian Han ◽  
Hongyang Jing ◽  
...  
Keyword(s):  
Microstructure Evolution ◽  
Low Cycle Fatigue ◽  
Fatigue Behavior ◽  
Resistant Steel ◽  
Cycle Fatigue ◽  
Heat Resistant Steel ◽  
Heat Resistant

Simulation of Microstructure Evolution on Copper, Aluminum and Alloy during ECAP

2013 ◽  
Vol 652-654 ◽  
pp. 1927-1931
Author(s):  
Ting Biao Guo ◽  
Jun Yuan Zhao ◽  
Yu Tian Ding ◽  
Hai Long Li ◽  
Bo Liu
Keyword(s):  
Microstructure Evolution ◽  
Stacking Fault ◽  
Simulation Software ◽  
Stacking Fault Energy ◽  
Obvious Effect ◽  
Element Simulation ◽  
Metal Aluminum ◽  
Deformation Speed ◽  
Copper Aluminum ◽  
Deform 3D

The microstructure evolution of different stacking fault energy metal materials, copper, aluminum alloy and magnesium alloy during ECAP, were investigated based on the finite element simulation software DEFORM-3D. Analyzed the effect on the microstructure of deformation speed, extrusion passes and stacking fault energy. The results show that, the grain size is decreased with the pass number increasing, and deformation speed has no obvious effect on the microstructure. The high SFE metal, aluminum, shows a finer grains than the medium SFE metal, copper.

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