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Zn对Al-Li-Cu-Mg-Zr合金时效过程的影响 被引量:17

EFFECT OF Zn ON AGING RESPONSE OF Al-Li-Cu-Mg-Zr ALLOY
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摘要 Zn的存在加快了Al-Li-Cu-Mg-Zr合金的时效硬化速度,明显促进S’相的析出,降低δ’颗粒的长大速度.经过长时间时效后,含Zn合金中将析出含Zn的条状相;根据正电子湮没参数的变化研究了时效过程中Zn对合金的缺陷浓度及基体电子结构的影响. Effect of Zn on age hardening, microstructure, defects and electronic structurein matrix of Al-Li-Cu-Mg-Zr alloy has been investigated. The addition of Zn to the alloysignincantly influences the precipitation, aging and positron annihilation parameters. TheZn-containing alloys exhibit stronger hardening tendency and higher value of hardness.Moreover, the presence of Zn may delay the growth of δ' particles and stimulate the precipita-tion and uniform distribution of S' phase. After aged for along time, coarse lath-like phasesrich in Zn would precipitate both in matrix and at grain boundaries in the Zn-containing al-loys.
出处 《金属学报》 SCIE EI CAS CSCD 北大核心 1993年第12期A527-A533,共7页 Acta Metallurgica Sinica
基金 国家自然科学基金
关键词 显微组织 铝锂合金 沉淀硬化 Al-Li alloy age hardening microstructure Zn
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  • 1蒋晓军,1990年

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