Effect of cerium on microstructure, wetting and mechanical properties of Ag-Cu-Ti filler alloy
来源期刊：JOURNAL OF RARE EARTHS2009年第6期
论文作者：DING Wenfeng XU Jiuhua CHEN Zhenzhen FU Yucan YANG Changyong
Key words：cerium; microstructure; Ag-Cu-Ti alloy; mechanical property; rare earths;
Abstract: Effect of cerium on microstructure, mechanical and wetting properties of Ag-Cu-Ti filler alloy was researched with optical microscopy, scanning electron microscopy and X-ray diffraction. The results indicated that addition of cerium accelerated alloying of the filler alloy, enlarged supercooled region, caused microstructural refinement and dispersed distribution of intermetallic compounds. It resulted in the increase in microhardness and shear strength of Ag-Cu-Ti filler alloy. At the same time, cerium improved wetting property of Ag-Cu-Ti filler alloy on 0.45% C steel substrate. According to experiment results, the content of cerium added in Ag-Cu-Ti filler alloy should be con-trolled in the range of 0.25 wt.%-0.5 wt.%.
DING Wenfeng1，XU Jiuhua1，CHEN Zhenzhen1，FU Yucan1，YANG Changyong1
(1.Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China)
Abstract:Effect of cerium on microstructure, mechanical and wetting properties of Ag-Cu-Ti filler alloy was researched with optical microscopy, scanning electron microscopy and X-ray diffraction. The results indicated that addition of cerium accelerated alloying of the filler alloy, enlarged supercooled region, caused microstructural refinement and dispersed distribution of intermetallic compounds. It resulted in the increase in microhardness and shear strength of Ag-Cu-Ti filler alloy. At the same time, cerium improved wetting property of Ag-Cu-Ti filler alloy on 0.45% C steel substrate. According to experiment results, the content of cerium added in Ag-Cu-Ti filler alloy should be con-trolled in the range of 0.25 wt.%-0.5 wt.%.
Key words:cerium; microstructure; Ag-Cu-Ti alloy; mechanical property; rare earths;
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