Effects of post-processing on microstructure and mechanical properties of Laser powder bed fusion -processed GH4099

被引：1

作者：

Zhang, Ning ^{[1
]}

Qin, Yulin ^{[1
]}

Qiu, Wenbin ^{[2
]}

Luo, Hengjun ^{[3
]}

Liu, Wenhao ^{[1
]}

Rong, Yu ^{[4
]}

Chen, Danyang ^{[4
]}

Tang, Jiafeng ^{[1
]}

Deng, Hao ^{[3
]}

Chen, Longqing ^{[5
]}

Zhu, Jun ^{[1
]}

Yin, Ming ^{[6
]}

机构：

[1] Sichuan Univ, Coll Phys, Chengdu, Peoples R China

[2] Wuxi Inst Technol, Dept Fundamental Courses, Wuxi, Peoples R China

[3] Deyang Wanhang Die Forging Co Ltd, China Natl Erzhong Grp, Deyang 618099, Peoples R China

[4] State Grid Shanxi Elect Power Co, Taiyuan, Shanxi, Peoples R China

[5] Sichuan Univ, Inst Nucl Sci & Technol, Key Lab Radiat Phys & Technol, Minist Educ, Chengdu 610064, Peoples R China

[6] Sichuan Univ, Sch Mech Engn, Chengdu, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2025年

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

superalloy; laser powder bed fusion; microstructure; hot isostatic pressing; anisotropy; TENSILE PROPERTIES; RESIDUAL-STRESS; GH99; SUPERALLOY; ALLOY; BEHAVIOR; TEMPERATURE; ANISOTROPY; TEXTURE; SLM;

D O I：

10.1177/02670836251323871

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The GH4099 Superalloy, a nickel-based material, is widely deployed in aerospace and power industries owing to its exceptional high-temperature strength and thermal stability. However, defects inherent to laser powder bed fusion (LPBF) and resultant mechanical anisotropy significantly constrain its broader application. This study delves into the impact of subsequent heat treatment on the microstructure of GH4099 Superalloy produced via LPBF. It explores the origins of mechanical property anisotropy and strategies for its elimination. Hot Isostatic Pressing (HIP) treatment eliminates anisotropy in mechanical properties by eliminating defects, anisotropy in grain morphology, and texture problems. Finally, isotropic mechanical properties are obtained. This research offers promising avenues for eliminating material anisotropy and enhancing the overall mechanical properties of the alloy.

引用

页数：12

共 52 条

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