周琦,贾建刚,赵红顺,章新民,杨新田

• 1:兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室
• 2:无锡西姆莱斯石油专用管制造有限公司

摘要(Abstract)：

采用真空电弧熔炼/退火制备了Cr/Al复合合金化Fe3Si基有序合金。通过XRD、SEM对试样进行表征,同时对其显微硬度、压缩强度及弯曲强度等力学性能进行了综合分析。结果表明,Cr/Al复合合金化Fe3Si基有序合金主相仍为Fe3Si相。元素Al,Cr复合合金化较为明显的改善了Fe3Si基有序合金的脆性。Fe65Si25Cr5Al5的抗压和抗弯强度最高,这是因自身高的有序度而呈现的陶瓷性的高强度低应变量特征。有序合金表现出明显的解理断裂特征,Fe80 Si10 Cr5Al5表现出二次解理的特征,Fe75 Si15 Cr5 Al5和Fe70 Si20 Cr5 Al5在断裂时出现了一些韧性特征的撕裂棱,这应与自身适中的有序度有关。

关键词(KeyWords)： Fe3Si;有序合金;力学性能;Cr/Al复合合金化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51001057);; 甘肃省自然科学基金项目(1014RJZA006)

作者(Author): 周琦,贾建刚,赵红顺,章新民,杨新田

DOI: 10.13289/j.issn.1009-6264.2011.10.007

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