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用锡铅钎料钎焊H62黄铜的接头组织与性能 刘效方1,孙计生1,潘晖1 (1.北京航空材料研究院,北京,100095) 摘要:对HLSn60PbSbA钎料钎焊H62黄铜接头的组织和钎焊时间对接头组织及力学性能的影响进行了研究.结果表明,接头组织由铅基固溶体,锡铅基共晶,铜基固溶体,胞状与块状化合物相构成,当钎焊时间延长至120s时组织中出现片状化合物相.同时发现,片状化合物相是造成接头力学性能下降的主要原因,较短钎焊时间获得接头强度较高. 关键词:锡铅钎料; 钎焊; 黄铜; 组织; 性能; [全文内容正在添加中] ......
材料厚度对H62黄铜模压形变等效应变分布的影响曾佳伟,牟雪萍,彭开萍福州大学材料科学与工程学院摘 要:采用二维有限元法(FEM)模拟H62黄铜模压形变(GP)一周期的过程,分析了材料厚度对模压形变等效应变分布的影响,并进行了模压形变试验验证.结果表明:随着材料厚度的增加,等效应变的最大值区域从材料表面转移到中心;材料厚度越大,等效应变累积的速率越快,其均匀性越差;模拟结果中等效应变的分布规律与试验材料显微硬度的分布规律相吻合.关键词:有限元;模压形变;H62黄铜;等效应变;......
Ultrasound-Assisted Transient Liquid Phase Bonding of Magnesium Alloy Using Brass Interlayer in AirZhiwei Lai1,2,3,4,Ruishan Xie2,5,Chuan Pan3,Xiaoguang Chen2,Lei Liu2,Wenxian Wang5,Guisheng Zou21... different ultrasonic time at 460?C with brass interlayer in air. The results indicated that with increasing ultrasonic time, brass interlayer disappeared gradually and the Mg-Cu-Zn eutectic compounds were......
Trans. Nonferrous Met. Soc. China 22(2012) 2233-2240 Sensitivity of springback and section deformation to process parameters in rotary draw bending of thin-walled rectangular H96 brass tube ZHU Ying... on the section deformation should be always considered. Key words: thin-walled rectangular H96 brass tube; rotary draw bending; sensitivity analysis; springback; section deformation 1 Introduction Springback......
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Influence of tool deflection on micro channel pattern of 6:4 brass with rectangular tool Tae-Jin JE, Kang-Won LEE, Sang-Cheon PARK, Jae-Gu KIM, Doo-Sun CHOI, Kyoung-Taik PARK, Kyung... channel structure with 6:4 brass was carried out by shaping process using a single crystal diamond tool. FEM simulation using solid cantilever beam model was analyzed. In result of experiment, tool......
成分 Table 1 Chemical composition of H68 brass (reference to GB/T GBT5231-2001) 反向凝固实验前,首先采用稀盐酸溶液去除铜绞线表面氧化膜,油污等,然后用酒精或去离子水进行清洗后烘干,采用如图1所示的反向凝固装置制备了外径为8.5 mm的黄铜包覆纯铜绞线复合材料.采用差热分析(DSC)法获得了H68黄铜固相线温度...裂纹,随着黄铜熔体温度的提高,裂纹的数量减少(见图3(d1)~(d4)).另外,随着黄铜熔体温度的增大,复合材料表面氧化程度有所增大. 图3 不同制备参数条件下制备的黄铜包覆纯铜绞线复合材料的宏观照片 Fig. 3 Photos of brass cladding copper stranded wires with various preparing......
Relativity between corrosion-induced stress and stress corrosion cracking of brass in an ammonia solutionXianzhong Guo, Wuyang Chu, Kewei Gao, and Lijie QiaoMaterials Science and Engineering School...) of brass in an ammonia solution with various pH values or under various applied potentials was measured at slow strain rate tests. The additive stress in the same solution was measured using two......
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