郭晓妮,黄慧强,龚殿尧,徐建忠,汪德强

• 1:东北大学轧制技术及连轧自动化国家重点实验室
• 2:宁波兴业盛泰集团有限公司

摘要(Abstract)：

借助光学显微镜、透射电镜、X射线衍射及微拉伸试验等方法研究了深冷轧制工艺对H65黄铜板显微组织和抗拉强度的影响,分析了试样厚度引起的微尺寸效应对其力学性能的影响规律。结果表明:H65黄铜在深冷轧制不同变形量下均无新相产生;经过不同变形量的深冷轧制,H65黄铜板厚度从500μm减薄至70μm,显微组织逐渐细化并出现纤维组织,厚度为100μm时,组织内部出现了高密度位错和大量形变孪晶,孪晶与位错的交互作用显著;随着厚度的减小,强度上升,抗拉强度从原始态的474 MPa增加到734 MPa,表现出"越小越强"的尺寸效应。

关键词(KeyWords)： H65黄铜;深冷轧制;微观组织;尺寸效应

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 郭晓妮,黄慧强,龚殿尧,徐建忠,汪德强

DOI: 10.13289/j.issn.1009-6264.2017-0180

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