Cu-Ag合金原位纤维复合材料的沉淀强化效应
RARE METAL MATERIALS AND ENGINEERING（2007）
Abstract
研究了形变态Cu-10Ag和Cu-10Ag-RE合金原位纤维复合材料时效强化效应.在300 ℃以下温度时效显示连续沉淀并导致合金强化,在300 ℃以上温度时效显示不连续沉淀,析出片层状Ag沉淀并与Cu基体保持共格位向关系.在真应变η=6时效,合金具有高的时效强化效应,其极限拉伸强度增幅可达约12%;而在真应变η=9.8时效,时效强化效应减弱,极限拉伸强度增幅约4%～5%.微量Ce或Y添加剂提高Cu-10Ag合金的时效强化效应及不连续沉淀温度.
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Key words
in situ composite,Cu-Ag alloy,precipitate strengthening,trace rare-earth additions,ultimate tensile strength
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