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38.67MPa for MIG-pulse welds to 53.59MPa for FSW welds. Key words: friction stir welding; MIG-pulse welds; fatigue properties; microstructures CLC number: TG405 Document code: A 1 ... welds of the 5083 Al-Mg alloy, including fatigue life and fatigue characteristic values, and to compare the results with MIG-pulse welding. In addition, the microstructures of the two types of joints......
CLC─I/Ⅱ型除尘除氡子体净化器何平云锡公司摘 要:CLC─I/Ⅱ型除尘除氡子体净化器由云南锡业公司与东北工学院共同研究成功的CDC─I/Ⅱ型除尘除氧子体净化器,自1990年在北京通过了由中国有色金属工业总公司组织的专家鉴定,经云南省部份有色系统矿山单位使用后,反映良好,目前已销售出近百台.该产品荣获...关键词:......
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; lamellar microstructures; cell method; numerical modeling CLC number: TB331 Document code: A microstructures WANG Jin-cheng(王锦程)1, ZHANG Zhong-ming(张忠明)2, YANG Gen-cang(杨根仓)1......
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technology on microstructures and mechanical properties of A380 alloy LEI Jiping1, 2, YU Jianwu1, LI Chengbo3, CHEN Jianmei2, FAN Guanghui1, LI Zifu3 (1. State Key Laboratory of Advanced Design...: scandium; ultrasonic vibration; microstructures Al-Si合金具有比强度高,耐腐蚀性能好和热膨胀系低等特性,广泛应用于汽车,摩托车,航天航空等领域.同时,这类合金因含有质量分数较高的Si而具有良好的铸造性能(即流动性好),而晶粒细化和变质作用能很好地将改善铝合金的微观组织结构,提高合金的力学性能[1-2].研究表明,在铝合金中添加少量的稀土元素和高强超声振动不仅能......
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