High-temperature oxidation wear performance and mechanism of Cr-Mo (W)-V hot-work die steel

被引:2
作者
Shi, Yuanji [1 ,2 ]
Yu, Linhui [3 ]
Guo, Xunzhong [2 ]
Cheng, Cheng [3 ]
Zuo, Pengpeng [4 ]
Dai, Yunzhong [5 ]
机构
[1] Nanjing Vocat Univ Ind Technol, Yangshan North Rd 1, Nanjing 210046, Peoples R China
[2] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing, Peoples R China
[3] Nanjing Vocat Univ Ind Technol, Sch Mech Engn, Nanjing, Peoples R China
[4] Shanghai Univ, Sch Mat Sci & Engn, Shanghai, Peoples R China
[5] Yibin Vocat & Tech Coll, Dept Modern Mfg Engn, Yibin, Peoples R China
关键词
Hot-work die steel; M; C-2; carbides; Oxidation wear; Wear rate; SLIDING WEAR; TOOL STEEL; FRICTION; RESISTANCE; BEHAVIOR; H13; OXIDES; IRON;
D O I
10.1515/ijmr-2020-8074
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
Dry sliding tests for Cr-Mo (W)-V hot-work die steels were performed at 400-700 degrees C using a UMT-3 wear tester. The wear behavior was studied systematically to explore the general characteristics under high-temperature oxidation conditions. When a mild-to-severe oxidation wear transition occurred, the wear rate of the Cr-Mo (W)-V hot-work die steels could be divided into different stages. The wear rate in stage I remained low and increased continuously with increasing temperature in stage II. It decreased within a narrow temperature range in stage III and increased significantly at a high test temperature in stage IV. The microstructures of DM, H21, and H13 steels at 350 HV30 were observed in stage III, and the M C-2 carbides were extensively analyzed. Furthermore, by examining the continuous heating transformation curves, the decrease in the wear rate in stage III was qualitatively confirmed, depending on the transformation of the M C-2 carbides.
引用
收藏
页码:12 / 32
页数:21
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