Enhanced red hardness through fine carbides in M2 high-speed steel fabricated via electron beam powder bed fusion

被引：0

作者：

Wei, Yingkang ^{[1
]}

Zhang, Yufeng ^{[1
]}

Chu, Xin ^{[2
]}

Yang, Shufeng ^{[3
]}

Wang, Jianyong ^{[1
]}

Jia, Wenpeng ^{[1
]}

Zhu, Jilei ^{[1
]}

Liu, Shifeng ^{[1
]}

机构：

[1] Xian Univ Architecture & Technol, Sch Met Engn, Xian 710055, Shaanxi, Peoples R China

[2] Guangdong Acad Sci, Inst New Mat, Natl Engn Lab Modern Mat Surface Engn Technol, Guangdong Prov Key Lab Modern Surface Engn Technol, Guangzhou 510651, Guangdong, Peoples R China

[3] Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2025年 / 36卷

基金：

中国国家自然科学基金;

关键词：

Electron beam powder bed fusion; High-speed steel; Microstructure; Carbide; Red hardness; MECHANICAL-PROPERTIES; STABILITY;

D O I：

10.1016/j.jmrt.2025.03.174

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

M2 high-speed steel (HSS) is a crucial raw material for the manufacturing of high-performance precision cutting tools. Additive manufacturing technology, such as electron beam powder bed fusion (EB-PBF), enables the shortflow and high-efficiency fabrication of tools with complex structures, presenting promising development prospects. This study investigated the microstructural evolution and hardness variation of EB-PBF fabricated M2 HSS under simulated tool service conditions (500-600 degrees C, 1-3 cycles, 1 h per cycle). After service, the grain structure of the samples was further refined from 2.67 mu m to 1.27-1.49 mu m, accompanied by intensified precipitation of intracrystalline fine carbides, while the hardness remained between 61 and 66.1 HRC. Compared to the wrought bulk counterpart (quenched and tempered), the material exhibits a maximum improvement of 14 % in red hardness and 10.5 % in wear resistance.

引用

页码：1562 / 1571

页数：10

共 46 条

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