EFFECT OF Y ON PRECIPITATION AND MECHANICAL PROPERTIES OF Al-Li ALLOY
微量Y对Al—Li合金的析出相和力学性能的影响
GUI Quanhong,
JIANG Xiaojun,
MA Luming,
LIANG Guojun,
XING Zhongshu,
LI Yiyi Institute of Metal Research,
Academia Sinica,
Shenyang research assistant Institute of Metal Research demia Shenyang,
桂全红,
蒋晓军,
马禄铭,
梁国军,
邢中枢,
李依依
Keywords: Al-Li alloy,Y,precipitation,strength,ductility
析出相,强度,塑性,铝锂合金,钇
Abstract:
研究了Y(0.1、0.5wt-％)对Al-Li-Cu—Mg—Zr合金析出相与拉伸性能的影响结果表明:Y可使铸态合金晶粒细化:促进β′(Al_3Zr)相析出:抑制δ′(Al_3Li)相的长大速度:使S′(Al_2CuMg)相的分布均匀化.添加0.1％Y能改善合金塑性而不降低强度:添加0.5％Y可使强度提高而塑性不降低
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