白层中的绝热剪切带  

ADIABATIC SHEAR BAND IN WHITE-ETCHING LAYER

作　　者：张保法[1] 沈万慈[1] 刘英杰[1] 王远飞 唐祥云[1] 

机构地区：[1]清华大学,北京100084

出　　处：《金属学报》1997年第11期1161-1164,共4页Acta Metallurgica Sinica

基　　金：国家自然科学基金!59171054

摘　　要：40CrNiMo钢的冲击磨损实验发现，表面白层中产生了硬度更高的绝热剪切带.这种绝热剪切带有非常细小的晶粒，比白层更容易产生裂纹或断裂本文的研究认为：冲击磨损的白层中发生了动态回复。Adiabatic shear band was observed in surface white-etching layer in impact wear test.The band possesses very fine crystalline grains,and is harder than white-etching layer.The adiabatic shear bnad in white-etching layer is liable to fracture or cracking in impact wear.It's supposed that dynamic recrystallization occures in the band in white-etching layer whereas dynamic recovery takes place in the white-etching layer.

关 键 词：白层 绝热剪切带 冲击磨损 动态回复 断裂 铬 钢 

分 类 号：TG142.15[一般工业技术—材料科学与工程]