深冷处理对ZQAl10-4-4铝青铜压缩性能的影响

Effect of cryogenic treatment on compressive properties of ZQAl10-4-4 aluminum bronze

利用光学显微镜、扫描电镜及电子万能试验机对深冷处理前后ZQAl10-4-4铝青铜的微观组织、压缩断口形貌及抗压强度进行了观察与测试,探讨了深冷处理对ZQAl10-4-4铝青铜压缩性能的影响。结果表明,深冷处理能降低铸态铝青铜的抗压强度,深冷处理后再经600℃×5 min回火,铝青铜的抗压强度得到明显提高,铝青铜的显微组织与抗压强度有良好的对应关系。

The microstructure , compressive fracture morphology and compressive strength of ZQAl 10-4-4 aluminum bronze before and after cryogenic treatment were observed and tested by OM , SEM and electron universal test machine .The effect of cryogenic treatment on compressive properties of the aluminum bronze was investigated .The results show that the cryogenic treatment can reduce the compressive strength of ZQAl10-4-4 aluminum bronze .After cryogenic treatment and tempering at 600 ℃ for 5 min, the compressive strength of the aluminum bronze increases obviously .The microstructure of the aluminum bronze shows good correspondence with the compressive strength .