共搜索到13091条信息，每页显示10条信息，共1310页。用时：0小时0分0秒447毫秒
......
......
transformation, which makes the critical radius of nucleation decrease and the rate of nucleation increase. As a result, the microstructure of CuCr ribbon can be further refined. Key words: CuCr alloys...; 1 Introduction The contact material based on CuCr alloys containing 20%-50% Cr has been widely......
CuCr bulk alloy produced by mechanical alloying and explosive compaction ZHAO Zheng(赵 铮)1, LI Xiao-jie(李晓杰)2, TAO Gang(陶 钢)1, DU Chang-xing(杜长星)1 1. College of Power Engineering, Nanjing...; Abstract: CuCr bulk alloy was produced by mechanical alloying and explosive compaction technology. Four kinds of milling time were used to analyze......
爆炸压实CuCr合金过程中的能量与变形 纪松1,孟松鹤2,罗守靖3,陈子明1,李金平2,李垚2 (1.中国兵器工业第五二研究所,宁波分所,浙江,宁波,315041;2.哈尔滨工业大学,复合材料与结构研究所,黑龙江,哈尔滨,150001;3.哈尔滨工业大学,材料科学与工程学院,黑龙江,哈尔滨,150001) 摘要:根据爆炸冲击能分为钢管变形能和粉末压实能两部分,爆炸冲击能由钢管动能计算给出,而钢管变形能由钢管的实际变形程度决定,由此得到爆炸压实CuCr合金过程中能量与变形之间的关系.结果表明,采用爆炸压实工艺制备了相对理论密度92%以上的CuCr触头材料;随着冲击能的增加,粉末压实能同步增加,而钢管变形量和变形能几乎不变.因此,炸药量太多,粉末压实能也就太多,反而发生马赫反射,导致爆炸坯密度降低. 关键词:爆炸压实; 冲击能; 压实能; 变形能; CuCr合金; [全文内容正在......
Preparation of CuCr alloys by thermit-reduction electromagnetic stirringZhihe Dou, Tingan Zhang, Haien Yu, Liping Niu, Xiaoli Jiang, and Huan Yang School of Materials and Metallurgy, Northeastern..., and alloying elements on CuCr have been investigated respectively during the preparation of CuCr alloys by thermit-reduction electromagnetic stirring. The results indicate that the reasonable reactant mass ratio......
......
......
rules and parameters of Cu-Cr alloys were firstly gotten. Key words: CuCr alloy; solidification simulation; rapid solidification; melt-spinning 在各种急冷快速凝固技术中, 单辊熔体快淬方法是目前在实验室广泛使用的一种方法. 制带过程的温度精确测量是至今无法解决...Cu-Cr体系的一些凝固规律和凝固参数. 关键词: CuCr合金; 凝固模拟; 快速凝固; 熔体快淬 中图分类号: TG146.1 文献标识码: A Numerical simulation of single roller melt-spinning for solidification process of Cu-Cr alloy WANG You-hong1, 2, SUN......
; Abstract: The CuCr25 and CuCr25Te contact materials were manufactured by vacuum casting process. The microstructures of two alloys were observed by metallographic microscope... element has both advantages and disadvantages on main properties of CuCr contact material. Key words: Te; CuCr contact material; vacuum cast ......
