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块体超细/纳米结构金属材料的累积叠轧制备技术蔡明晖东北大学材料与冶金学院摘 要:综述了一种制备大块状超细/纳米结构金属材料很有效的剧烈塑性变形工艺--累积叠轧(Accumulative Roll Bonding,ARB).重点阐述了ARB的工艺原理及变形过程中的界面结合机理,ARB材料的晶粒细化机理,组织特征,织构演变及强韧化机制等,分析了ARB工业应用中存在的主要问题及应对措施,并展望了该技术在制备超细晶材料领域的应用前景.关键词:累积叠轧;超细晶;结合界面;织构;强韧化机制;......
The Frame and Function Analysis of the Non-Crystal Bonding Brushing Plating Ni-W-SiC Coat XIANG wei-xiang1,ZHANG Yu-feng1,CAO Shou-liang1 (1.Wuhan Ordnance Noncommissioned Officer School, Wuhan 430075, China) 摘要:The article discusses the electric brushing plating technology of the Ni-W-SiC non-crystal bonding coat.By the brushing plating technology it attains the non-crystal bonding coat which......
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Bonding Energy and Growth Habit of Lithium Niobate Single Crystals Xue Dongfeng1,Zhang Xu1 (1.State Key Laboratory of Fine Chemicals, Department of Materials Science and Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116012, China) Abstract:On the basis of crystallographic structure of lithium niobate (LN), the bonding energy was quantitatively......
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SUPERPLASTICITY AND DIFFUSION BONDING OF IN718 SUPERALLOY K.F. Zhang1,D.Z. Wu1,W.B. Han1,B. Wang1 (1.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China) Abstract:The superplasticity and diffusion bonding of IN718 superalloy were studied in this article. The strain rate sensitivity index m was obtained at different temperatures and various initial......
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New type of groove used to improve friction in roll forgingJIA Zhi(贾智) , ZHOU Jie(周杰), JI Jin-jin(姬金金) (School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China)Abstract:A FEM model for a failed industrial example of roll forging was established to analyze the generation mechanisms of the mismatch of size and shape of two spring board. To demonstrate......