| 快速凝固Cu—Cr合金时效析出的共格强化效应 |
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| 引用本文： | 刘平,康布熙.快速凝固Cu—Cr合金时效析出的共格强化效应[J].金属学报,1999,35(6):561-564. |
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| 作者姓名： | 刘平 康布熙 |
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| 作者单位： | 西安交通大学材料学院!西安，710049洛阳工学院材料系，洛阳，471039，洛阳工学院材料系!洛阳，471039，洛阳工学院材料系!洛阳，471039，西安交通大学材料学院!西安，710049，西安交通大学材料学院!西安，710049 |
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| 摘 要： | 采用单辊快速凝固的方法制备Ｃｕ－Ｃｒ合金微晶薄带，经适当的时效处理，可以在导电率不降低的前提下，显著提高合金的强度和硬度，强度和硬度的提高主要是由晶粒细化和共格弥散析出强化所造成，共格硬化效果与采用Ｇｅｒｏｌｄ公式计算的结果非常接近，与常规固溶处理的Ｃｕ－Ｃｒ合金相比，峰值硬度提高了１．６倍，其中２７％由细晶强化产生，７３％则由时效析出的共格强化提供，固溶强化和空位强化对快速凝固Ｃｕ－Ｃｒ合金强度
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| 关 键 词： | 快速凝固 共格强化效应 铜铬合金 |
COHERENT STRENGTHENING OF AGING PRECIPITATION IN RAPIDLY SOLIDIFIED Cu-Cr ALLOY |
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| LIU Ping, KANG Buxi, CAO Xingguo, HUANG Jinliang, GU Haicheng.COHERENT STRENGTHENING OF AGING PRECIPITATION IN RAPIDLY SOLIDIFIED Cu-Cr ALLOY[J].Acta Metallurgica Sinica,1999,35(6):561-564. |
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| Authors: | LIU Ping KANG Buxi CAO Xingguo HUANG Jinliang GU Haicheng |
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| Affiliation: | LIU Ping, KANG Buxi, CAO Xingguo, HUANG Jinliang, GU Haicheng1) |
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| Abstract: | A single-roller melt spinning method was used to produce Cu-Cr microcrystalline alloyribbons. After proper aging treatment, the strength and hardness of the alloy were remarkably enhancedwhile the conductivity only had a minimal decreajse. The grain refinement and the coherent dispersionstrengthening were proved to be the major factors contributing to the improvement of strength and hardnessof the alloy after aging. The degree of cohereal strengthening is almost idelltical with that calculated byGerold equation. Compared with the solid solution quenched Cu-Cr alloy, the peak hardness is increasedby 160%, in which about 27% results from the grain refinement and 73% from coherent strengthening dueto aging precipitation. Neither the solid solution strengthening nor vacancy strengthening has detectableeffect on the strength and hardness of the rapidly solidified Cu-Cr alloy. |
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| Keywords: | rapid solidification Cu-Cr alloy aging precipitation coherent strengthening |
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