奥氏体锰钢的综合加工硬化机理  

COMPREHENSIVE MECHANISM OF WORK HARDENING OF AUSTENITIC MANGANESE STEEL

作　　者：王兆昌[1] 

机构地区：[1]北京科技大学

出　　处：《钢铁研究学报》1994年第1期67-73,共7页Journal of Iron and Steel Research

摘　　要：本文分析讨论了奥氏体锰钢加工硬化机理的几个主要假说：即高位错密度，动态应变时效，形变孪晶及形变马氏体四种强化机理。根据形变奥氏体锰钢的显微照相及ＴＥＭ，与改变合金成分及形变量对此合金结构的效应，认为几个机理都起作用，而起主要作用的机理则决定于应变量，奥氏体的堆垛层错能及稳定度。设计能充分加工硬化并且抗磨的奥氏体锰钢的成分时就应综合考虑各组成合金的元素含量对各个机理的效应及最终产生的对加工硬化能量及硬化率的影响。In this paper, the four principal suppositions on the mechanisms ofwork hardening of austenitic manganese steel (AMS),1.e,the strengthening of AMSby high dislocation density,by dynamic strain ageing,by deformation twinning and bydeformation martensite,were critically reviewed. Based on the effects of aItering com-positions of AMS and increasing amounts of strain on the structure of the deformedalloy and the analyses of the micrographs and TEM’s it, the conclusion is that theabove mentioned mechanisms all can play their roles in the work hardening of AMSand the predominating ones are determined by the amount of deformation and theSFE and stability of austenite. Thus the guidelines in designing of composition ofAMS which will be sufficiently work hardened and abrasion resistant, require theconsideration of the comprehensive effects of the contents of the constituent elementson the different mechanisms and their uItimate effects on the rate and capacity ofwork hardenig of AMS.

关 键 词：奥氏体 锰钢 加工硬化 机理 

分 类 号：TG142.14[一般工业技术—材料科学与工程]