剪切力对半固态Sn-Bi合金的组织演变与塑性的影响
发布时间：2019-06-07 16:03
【摘要】：采用机械搅拌半固态铸造技术制备Sn-62Bi合金,通过XRD、EDS等测试方法探索了不同固相率下剪切力和作用时间对半固态Sn-Bi合金组织和塑性的影响。结果表明:在半固态温度145℃、搅拌速度为500 r/min和搅拌时间为15 min的工艺条件下,制备出分布均匀、尺寸约30μm块状铋初生相的半固态Sn-62Bi合金,拉伸试验下的伸长率为39.9%,与在180℃下的合金金属熔液直接水冷凝固而成的试样相比,其伸长率提高了283.3%。当搅拌温度为150℃时,随着搅拌时间的延长,块状初生相Bi相相互摩擦和碰撞破碎,初生相的尺寸减少,分布较均匀,所制备的半固态Sn-62Bi合金的伸长率得到改善。
[Abstract]:Sn-62Bi alloy was prepared by mechanically stirred semi-solid casting. The effects of shear force and action time on the microstructure and plasticity of semi-solid Sn-Bi alloy with different solid phase ratios were investigated by XRD,EDS and other testing methods. The results show that the semi-solid Sn-62Bi alloy with uniform distribution and 30 渭 m bulk bismuth primary phase was prepared under the conditions of semi-solid temperature 145 鈩，
本文编号：2494913
[Abstract]:Sn-62Bi alloy was prepared by mechanically stirred semi-solid casting. The effects of shear force and action time on the microstructure and plasticity of semi-solid Sn-Bi alloy with different solid phase ratios were investigated by XRD,EDS and other testing methods. The results show that the semi-solid Sn-62Bi alloy with uniform distribution and 30 渭 m bulk bismuth primary phase was prepared under the conditions of semi-solid temperature 145 鈩，
本文编号：2494913
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