论文部分内容阅读
对Fe－1．9C－16．5Cr－2．6Ni亚稳奥氏体基合金在不同试验条件下的摩擦磨损表层研究表明，在较低的摩擦应力作用下，表层即可应变诱发α’和ε马氏体。马氏体转变量随原奥氏体形变量增加而增大，硬度也增高。由原奥氏体引起的表面硬度提高的原因：（1）α’和ε马氏体的形成；（2）产生大量的位错和层错。在滑动磨损试验时，该合金的耐磨性高于25％Cr马氏体基白口铸铁。
Friction and wear surface studies of Fe-1.9C-16.5Cr-2.6Ni metastable austenitic alloys under different experimental conditions show that under the action of low frictional stress, the surface layer can strain-induce α ’and ε martensite. The amount of martensitic transformation increases with the increase of the original austenite deformation, and the hardness increases. The reasons for the increase of the surface hardness caused by the prior austenite are: (1) the formation of α ’and ε martensite; (2) the generation of a large number of dislocations and stacking faults. In the sliding wear test, the wear resistance of the alloy is higher than 25% Cr martensitic white cast iron.