Anisotropy of mechanical properties response on crystallographic features of GH5188 superalloy fabricated by laser powder bed fusion

Wei WEI; Xianghui ZHENG; Xue CHEN; Yu ZHAI; Qian CHENG; Fengjiao GUO; Qiong HE; Wuli SU; Chao ZHANG; Hao RAN; Mingsai WANG; Chongxiang HUANG

doi:10.51393/j.jamst.2023015

Volume 3 Issue 4

Sep. 2023

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Article Navigation > Journal of Advanced Manufacturing Science and Technology > 2023 > 3(4): 2023015

Wei WEI, Xianghui ZHENG, Xue CHEN, Yu ZHAI, Qian CHENG, Fengjiao GUO, Qiong HE, Wuli SU, Chao ZHANG, Hao RAN, Mingsai WANG, Chongxiang HUANG. Anisotropy of mechanical properties response on crystallographic features of GH5188 superalloy fabricated by laser powder bed fusion[J]. Journal of Advanced Manufacturing Science and Technology , 2023, 3(4): 2023015. doi: 10.51393/j.jamst.2023015

Citation:

Wei WEI, Xianghui ZHENG, Xue CHEN, Yu ZHAI, Qian CHENG, Fengjiao GUO, Qiong HE, Wuli SU, Chao ZHANG, Hao RAN, Mingsai WANG, Chongxiang HUANG. Anisotropy of mechanical properties response on crystallographic features of GH5188 superalloy fabricated by laser powder bed fusion[J]. Journal of Advanced Manufacturing Science and Technology , 2023, 3(4): 2023015. doi: 10.51393/j.jamst.2023015

Citation:

Wei WEI, Xianghui ZHENG, Xue CHEN, Yu ZHAI, Qian CHENG, Fengjiao GUO, Qiong HE, Wuli SU, Chao ZHANG, Hao RAN, Mingsai WANG, Chongxiang HUANG. Anisotropy of mechanical properties response on crystallographic features of GH5188 superalloy fabricated by laser powder bed fusion[J]. Journal of Advanced Manufacturing Science and Technology , 2023, 3(4): 2023015. doi: 10.51393/j.jamst.2023015

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Anisotropy of mechanical properties response on crystallographic features of GH5188 superalloy fabricated by laser powder bed fusion

doi: 10.51393/j.jamst.2023015

a School of Aeronautics & Astronautics, Sichuan University, Chengdu 610065, China;
b Yan'an Vocational & Technical College, Yan'an 716000, China

Funds:

This work was supported by the National Natural Science Foundation of China (No. 51931003).

Received Date: 2023-07-15
Accepted Date: 2023-09-01
Rev Recd Date: 2023-08-10

Available Online: 2023-09-06

Publish Date: 2023-09-06

Abstract

Abstract

The relationship between the crystallographic features and the anisotropic mechanical properties of a Laser Powder Bed Fusion (LPBF) fabricated GH5188 alloy were investigated. For this purpose, the LPBF-ed GH5188 alloy was subjected to a tensile test in two different tensile axis orientations, perpendicular and parallel to the building direction, which we call “horizonal” and “vertical” orientations correspondingly. The techniques of EBSD and TEM were employed to characterize the different strained samples. The results show that the LPBF-ed GH5188 alloy exhibits a<001>fiber texture with elongated grains along the building direction. Compared to the vertical samples, the horizonal samples acquire a higher Taylor factor and a higher KAM (kernel average misorientation) value during deformation, which lead to a better yield strength and a higher strain hardening rate. Furthermore, the texture of the deformed samples revealed that the horizonal samples have a better coordinated deformability, which leads to higher ductility compared to the vertical samples.
- Laser powder bed fusion,
- GH5188 Co-base superalloy,
- Anisotropy of mechanical properties,
- Crystallographic features,
- Taylor factor

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References(27)

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