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Journal of Aeronautical Materials
Article . 2020
Data sources: DOAJ
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Effect of surface integrity evolution on high-temperature fatigue property of FGH95 alloy

Authors: LUO Xuekun; WU Xiaoyan; WANG Kechang; WANG Xin; TANG Zhihui;

Effect of surface integrity evolution on high-temperature fatigue property of FGH95 alloy

Abstract

Surface integrity state after machining has an important effect on the service life of metal parts and components. The effects of four kinds of surface integration processing methods on the high-temperature fatigue properties of FGH95 alloy were investigated. These four surface processing methods were AR (grinding), GCSSP (grinding and cast steel shot peening), GCSP (grinding and ceramic shot peening) and GDSP (grinding and double shot peening). The surface roughness, residual stress distribution and micro-hardness were characterized by roughness tester, X-ray diffraction (XRD) stress tester and micro-hardness tester. The rotating-bending fatigue life with notched specimens (stress concentration factor, Kt = 1.7) was investigated. The results indicate that the fatigue life of specimens increased largely by GCSSP, GCSP and GDSP compared with AR specimens respectively. Furthermore, GDSP process can obtain the best surface residual stress field distribution, gradient distribution of micro-hardness, surface roughness and improvement of the high-temperature fatigue property.

Keywords

superalloy, shot peening, fatigue, TL1-4050, surface integrity, Motor vehicles. Aeronautics. Astronautics

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold