1) tempered martensite embrittlement
回火马氏体脆化
2) tempered martensite
回火马氏体
1.
The result shows that tempered martensite has apparent lath character when temper is between 740℃~780℃,and the hardness of welded joint is 264~237HV,which can get better performance of the welded joint.
结果表明,在740~780℃之间回火,焊缝硬度为264~237HV,回火马氏体板条特征明显,可以获得优良的焊接接头性能;回火温度超过780℃,焊缝板条马氏体特征消失,母材回火索氏体中碳化物产生偏聚,硬度、塑性明显降低。
2.
The evolution of deformation dislocation structure during the tensile loading was examined by transmission electron microscopy in the tempered martensite of low and middle carbon alloy steels.
应用透射电子显微术研究低碳及中碳合金钢回火马氏体的形变位错结构随拉伸加载过程的演变。
3.
The carbides precipitated in the isothermal lower bainite and the tempered martensite in 38Si2Mn2Mo steel were studied using TEM.
表明下贝氏体具有碳过饱和度 ,ε 碳化物是从贝氏体铁素体中析出的 ,具有与回火马氏体相似的切变特征。
3) martensite tempered content
马氏体回火
4) over tempered martensite
过度回火马氏体
5) auto-tempering martensite
自回火马氏体
1.
The metallographic observation revealed that when the peak temperature was between Ac_1~Ac_3,a mixture microstructure with fine martensite and tempering martensite of high temperaturewas obtained, moverover auto-tempering martensite was produced.
随着t_(8/5)的增加,其组织由自回火马氏体(含少量孪晶马氏体)、自回火马氏体+下贝氏体、自回火马氏体+下贝氏体+上贝氏体、下贝氏体+上贝氏体,最后形成以上贝氏体为主的组织。
6) self tempered martensite steel
自回火马氏体钢
补充资料:回火马氏体
temperedmartensite:淬火时形成的片状马氏体(晶体结构为体心四方)于回火第一阶段发生分解—其中的碳以过渡碳化物的形式脱溶—所形成的、在固溶体基体(晶体结构已变为体心立方)内弥散分布着极其细小的过渡碳化物薄片(与基体的界面是共格界面)的复相组织;这种组织在金相(光学)显微镜下即使放大到最大倍率也分辨不出其内部构造,只看到其整体是黑针(黑针的外形与淬火时形成的片状马氏体(亦称“α马氏体”)的白针基本相同),这种黑针称为“回火马氏体”。
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