摘要
本文利用X射线和透射电子显微镜考察了微合金化高锰钢在辊轧、静压和冲击磨粒磨损条件下表层组织的转变,发现高锰钢在加Nb并吹N_2以后形变时容易发生γ→α-M转变,而普通高锰钢和吹N_2高锰钢在相同条件下都只形成了大量的形变孪晶。冲击磨粒磨损试验表明,加Nb和/或吹N_2高锰钢的耐磨性比普通高锰钢的高33％—97％。文章指出,往高锰钢中加入适量的Nb,可以引起奥氏体在磨损过程中转变为形变诱发马氏体,这是强化奥氏体基体,提高高锰钢之加工硬化速率和耐磨性的有效途径之一。
Microstructure transformation of high manganese steel and alloy has been studied under the processing conditions of the roller, static compression and impact abrasive wear in this paper. The microstructure of high manganese steels added element niobium and blown nitrogen gas can easily result in the transformation from austenite to α-martensite, at the same situation, the microstructure of ordinary high manganese steel only forms a large amount of deformation twin by X-ray and Transmission Electron Microscopy (TEM) analysis. The result of the impact abrasive wear test shown that the abrasive resistance of alloy high manganese steels increases by 33 - 97%. It is proved that after adding an amount of element niobium, the austenite can be transferred to deformation-induced α-martensite. The microstructure transformation of alloy high manganese steels on deformation is one of methods for strenthening austenite matrix and increasing the work-hardening rate and antiwear property of high manganese steel.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
1993年第3期201-207,共7页
Tribology
关键词
高锰钢
微合金化
形变孪晶
耐磨性
high manganese steel, micro alloying, deformation twin , deformation-induced α-martensite, antiwear property
