激光相变硬化机理主要是马氏体强化和晶粒细化。
The mechanism of laser hardening is martensitic hardening and grain refining.
结果表明，形变诱发马氏体组织所加剧的加工硬化与冶炼时所产生的气孔缺陷的共同作用是冷轧断带的原因。
The results show that the effects of work hardening by strain-induced martensite transformation and cast pore defects are the main reasons leading to strip broken of the steels during cold rolling.
完全硬化区由细小针状马氏体、残余奥氏体和少量点状碳化物组成，过渡区由马氏体和回火索氏体（珠光体）组成；
The completely hardening region is composed of fine acicular martensites, residual austenites and a few dot-like carbonides and the transition region is made up of martensites and sorbites (pearlite).
观察到高应变率时应力平台与硬化阶段的TEM组织形貌分别为孪晶与断续的马氏体。
TEM morphology of the twin specimens at stress plateau stage and martensite section at hardening stage has been observed.
铁素体迅速应变硬化和铁素体到马氏体的载荷传递使双相钢具有较高的初始应变硬化速率和较高的强度。
The higher initial strain hardening rate and higher strength of dual phase are attributed to rapid strain hardening in ferrite and the load transfer from the ferrite to martensite.
熔化区和固态相变区硬化相组织极为细小，马氏体呈微细针状，具有孪晶亚结构。
It is found that the structure of the hardened phase in melting and transformation zone is very tiny, the martensite appears to be tiny acicular and possesses twin substructure.
其硬化组织主要为隐晶马氏体，片状石墨基本保持原形貌不变。
The laser hardening microscopic structures are mainly very fine martensite and the original pattern of flake graphite basically remain.
表面碳势为1.1%C的渗碳硬化层内，临近外表面部位的枣核马氏体中会出现显微裂纹。
When carburized under high carbon potential (1. 1% C), microcracks tend to appear on the martensitic matrix near the outer surface of the layer.
结果显示对于等温淬火球铁，激光硬化层中马氏体片的尺寸与基体奥氏体—贝氏体中的铁索体板条尺寸相近。
The effects of laser hardening on the structure and wearability of a normalized and an austempered ductile iron were investigated.
以上诸因素的共同作用，使贝氏体具有比直接淬火所获得的马氏体更高的二次硬化效应、热强性和组织稳定性。
As a result of the coaction of abovementioned factors, the bainite has superior secondary hardening effect, thermal strength and structural stability to martensite formed by straight tempering.
以上诸因素的共同作用，使贝氏体具有比直接淬火所获得的马氏体更高的二次硬化效应、热强性和组织稳定性。
As a result of the coaction of abovementioned factors, the bainite has superior secondary hardening effect, thermal strength and structural stability to martensite formed by straight tempering.
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