M42/45 Steel Bimetal Composite Prepared by Spark Plasma Sintering and Interface Forming Mechanism
摘 要
利用放电等离子烧结(SPS)技术一次性实现了M42粉末高速钢的制备及其与45钢的连接, 得到双金属复合材料, 并对其界面的显微组织、元素分布进行了分析; 结合传统的扩散理论, 提出了连接机制模型, 并对相界面的形成机理进行了探讨。结果表明: M42/45钢复合材料连接界面组织分布均匀, 没有裂纹及大孔洞出现, 界面结合紧密; 复合材料的界面形成机制为熔合连接与扩散连接的协同作用, 其中烧结初期以熔合连接为主, 后期扩散连接逐渐成为主导。
Abstract
The preparation of M42 power high speed steel and the connection between M42 and 45 steel were performed at the same time using spark plasma sintering technology, and thus the bimetal composite was obtained. The microstructure and elemental distribution in the interface were analyzed. Based on the traditional diffusion theory, the connection models were proposed, and the interface forming mechanism was studied. The results show that the microstruture of connection interface of M42/45 steel composite was uniformly, no cracks or big holes were found, and the interface was compact. The interface forming mechanism of composite was the synergic action of fusion connection and diffusion connection, and fusion connection took a priority at the early stage of sintering, while diffusion connection gradually became dominant at later stage of sintering.
中图分类号 TG146.1
所属栏目 新材料 新工艺
基金项目 宁波市自然科学基金资助项目(2010A610152)
收稿日期 2011/3/22
修改稿日期 2011/10/1
网络出版日期
作者单位点击查看
备注游航(1987-), 男, 湖北黄冈人, 硕士研究生。
引用该论文: YOU Hang,WANG Xian-rui,LIANG Cui,XU Jin-fu. M42/45 Steel Bimetal Composite Prepared by Spark Plasma Sintering and Interface Forming Mechanism[J]. Materials for mechancial engineering, 2012, 36(3): 56~59
游航,王贤瑞,梁翠,徐金富. 放电等离子烧结制备M42/45钢双金属复合材料及界面形成机理[J]. 机械工程材料, 2012, 36(3): 56~59
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参考文献
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【3】段春争,王敏杰,蔡玉俊,等.W18Cr4V高速钢循环深冷处理后的力学性能和显微组织[J].机械工程材料,2008,32(5):23-25.
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【6】伍光凤,盛光敏.钛合金和不锈钢的扩散焊接研究进展[J].热加工工艺,2007,36(3): 86-89.
【7】陈哲,严有为.原位Nb/Nb5Si3复合材料的放电等离子烧结及结构形成机理[J].稀有金属材料与工程,2006,35(3):484-487.
【8】杨俊逸,李元元,李小强,等.电场活化烧结温度场的数值模拟[J].机械工程材料,2006,30(11):73-76.
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