Microstructure evolution and fracture mechanism of H13 steel during high temperature tensile deformation

被引：58
作者：
Wang, Yao-li [1 ,2 ]
Song, Ke-xing [1 ]
Zhang, Yan-min [1 ,3 ]
Wang, Guang-xin [4 ]
机构：
[1] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471023, Peoples R China
[2] Collaborat Innovat Ctr Nonferrous Met Henan Prov, Luoyang 471023, Peoples R China
[3] Henan Key Lab Adv Nonferrous Met, Luoyang 471023, Peoples R China
[4] Henan Univ Sci & Technol, Res Ctr High Pur Mat, Luoyang 471023, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2019年 / 746卷
基金：
国家重点研发计划;
关键词：
H13; steel; High temperature tensile deformation; Microstructure evolution; Fracture mechanism; Carbides; CONSTITUTIVE MODEL; LATTICE MISFIT; MARAGING-STEEL; HIGH-DENSITY; TRANSFORMATION; BEHAVIOR; STRENGTH; PRECIPITATION; ALLOY;
D O I：
10.1016/j.msea.2019.01.027
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
It is known that mechanical properties of hot working die steel deteriorate during service due to dynamic recovery, recrystallization and plastic deformation of tempered martensite. In order to clarify the associated microstructure evolution and fracture mechanism, a systematic investigation was carried out on a widely used hot working die steel. Samples were tensile deformed at different temperatures ranging from 25 degrees C to 640 degrees C and examined using SEM and TEM. Results obtained have shown that mechanical properties as well as fracture mode change with increasing testing temperature. These phenomena have been elaborated together with microstructure evolution during high temperature deformation. Deformation mechanisms and roles of different carbides in crack formation and propagation have been discussed.
引用
收藏
页码：127 / 133
页数：7
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