Thermal fatigue behavior of HHD hot work tool steel with structures

被引：1
|
作者：
Ma, Y. [1 ,2 ,3 ]
Wang, H. [2 ,3 ,4 ]
Chai, X. [5 ]
Zhuang, J. [2 ,3 ]
Li, J. [2 ,3 ,6 ]
Tong, J. [2 ,3 ]
Bhushan, B. [4 ]
机构：
[1] Jilin Univ, State Key Lab Automot Simulat & Control, Nanling Campus,5988 Renmin St, Changchun 130022, Jilin, Peoples R China
[2] Jilin Univ, Minist Educ, Key Lab Bion Engn, Nanling Campus,5988 Renmin St, Changchun 130022, Jilin, Peoples R China
[3] Jilin Univ, Coll Biol & Agr Engn, Nanling Campus,5988 Renmin St, Changchun 130022, Jilin, Peoples R China
[4] Ohio State Univ, Nanoprobe Lab Bio & Nanotechnol & Biomimet NLB2, 201 W 19th Ave, Columbus, OH 43210 USA
[5] Faw Foundry CO LTD, 95 Dongfeng St, Changchun 130013, Jilin, Peoples R China
[6] Shihezi Univ, Coll Mech & Elect Engn, North Four Rd, Shihezi 832000, Peoples R China
来源：
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK | 2018年 / 49卷 / 12期
基金：
中国国家自然科学基金; 欧盟地平线“2020”;
关键词：
Thermal fatigue; Surface structures; Rockwell hardness; Microstructure; Crack nucleation; Transgranular; FRICTION;
D O I：
10.1002/mawe.201700183
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
HHD hot work tool steel with a circular hole and a regular triangular hole were prepared to compare the thermal fatigue behavior. The results showed that the crack resistance of the sample with structure of the circular hole was superior to that of the regular triangular hole due to the release of tensile stress. The Rockwell hardness and microstructure around the structure and the plate have been measured before and after the thermal fatigue test. The results showed that the hardness decreased sharply during the thermal fatigue test and that the shape of the curves barely changed around the two structures and the plate. The observation of microstructures indicated that the crack nucleated at the grain boundary and the two structures were transgranular. The thermal fatigue behavior of high-Cr hot work tool steel processed by circular hole structure process got a remarkable improvement compared to the regular triangular hole structure and plate.
引用
收藏
页码：1494 / 1502
页数：9
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