Influence of nickel on secondary hardening of a modified AISI H13 hot work die steel

被引：9
|
作者：
Xia, S. W. [1 ]
Zuo, P. [1 ]
Zeng, Y. [1 ]
Wu, X. [1 ]
机构：
[1] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200072, Peoples R China
来源：
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK | 2019年 / 50卷 / 02期
基金：
国家重点研发计划;
关键词：
Hot work die steel; nickel content; carbides; secondary hardening; internal friction; DEEP CRYOGENIC TREATMENT; INTERNAL-FRICTION; CARBIDE PRECIPITATION; TEMPERATURE; BEHAVIOR;
D O I：
10.1002/mawe.201700205
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper focuses on the effects of nickel on secondary hardening of a modified H13 hot work die steel. Both the non-nickel steel and the nickel-added steel get a secondary hardening peak at 520 degrees C, and the secondary hardening peak trends to increase in the nickel-added steel. On the basis of scanning electron microscope and transmission electron microscope observation, the rise of the secondary hardening peak is in connection with the precipitation of M3C type carbides. More strip-shaped and needle-shaped M3C type carbides precipitated from matrix. By means of internal friction, the result suggests that nickel does not affect the position of the Snoek-Ke-Koster peak, but the height of Snoek-Ke-Koster peak of the nickel-added steel is higher, which indicates nickel enhances the interaction between dislocations and interstitial atoms, promoting the precipitation of carbides.
引用
收藏
页码：197 / 203
页数：7
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