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金属学报  2003 

Cr-Mn-N奥氏体-铁素体不锈钢的空蚀行为

, PP. 85-88

Keywords: Cr-Mn-N奥氏体-铁素体不锈钢,空蚀

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Abstract:

利用超声振荡空蚀实验机对Cu-Mn-N奥氏体-铁素体不锈钢进行了空蚀研究.结果表明,低硬度Cr-Mn-N不锈钢的抗空蚀性能高于高硬度的0Cr13Ni5Mo不锈钢.空蚀过程中,Cr-Mn-N奥氏体-铁素体不锈钢中的铁素体优先脱落,空蚀表面的铁素体含量由19%迅速降低到6.9%后保持稳定.奥氏体易于在铁素素体脱离后形成的蚀坑处开始脱落.加工硬化是该不锈钢吸收空蚀冲击能量的一个重要途径,是其硬度较低却表面出良好抗空蚀性能的重要原因.

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