16Mn/Zn复合材料界面组织结构与拉伸变形行为Interfacial structure and tensile deformation behavior of 16Mn/Zn composites
冉旭,何进,包晓军,曹占义,展鹏
摘要(Abstract):
采用拉伸试验、金相显微镜、扫描电子显微镜对复合铸造法制备的16Mn/Zn复合材料界面层组织和性能进行了研究。研究结果表明:16Mn/Zn复合材料的强度介于锌和16Mn钢之间;受纵向拉伸的条件下,16Mn/Zn复合材料中的微裂纹首先在靠近钢一侧的界面层处萌生,并随载荷增加,微裂纹逐向锌基体扩展,与外加应力相垂直的主裂纹联接成大裂纹,最终导致锌断裂,之后应力由16Mn钢单独承载直至断裂;16Mn/Zn复合材料的纵向拉伸断口分为韧性断裂(16Mn钢)和脆性断裂(界面和锌)。
关键词(KeyWords): 复合材料;界面;拉伸变形
基金项目(Foundation): 长春市科技攻关资助项目(03-045G18)
作者(Author): 冉旭,何进,包晓军,曹占义,展鹏
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