金属学报  1984, Vol. 20 Issue (1): 54-61

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微量Cu对Al-Zn-Mg合金沉淀过程和显微组织参数的影响

林肇琦;朱继良;孙贵经;杨胜坤

东北工学院;东北工学院;东北工学院;东北工学院

EFFECT OF Cu ON PRECIPITATION AND STRUCTURAL PARAMETERS OF Al-Zn-Mg ALLOY

LIN Zhaoqi; ZHU Jiliang; SUN Guijing; YANG Shengkun (Northeast Institute of Technology; Shenyang) (Manuscript received 4 March; 1983; revised manuscript 12 July; 1983)

林肇琦;朱继良;孙贵经;杨胜坤. 微量Cu对Al-Zn-Mg合金沉淀过程和显微组织参数的影响[J]. 金属学报, 1984, 20(1): 54-61.
, , , . EFFECT OF Cu ON PRECIPITATION AND STRUCTURAL PARAMETERS OF Al-Zn-Mg ALLOY[J]. Acta Metall Sin, 1984, 20(1): 54-61.

摘要 参考文献 相关文章 Metrics 全文: PDF(1160 KB)   摘要: 本文利用硬度(HV)、光学显微镜和透射电镜(TEM)系统地研究了微量Cu(0.19％)对Al-5.0Zn-1.7Mg合金的沉淀过程、临界形核温度(T_c~′)和显微组织参数的影响。结果表明,Cu能促进合金均匀沉淀,提高T_c~′和HV,但没有细化晶粒和抑制再结晶的作用。但在本实验所采用的时效条件下(120—200℃),含Cu合金的晶界沉淀相(GBP)、基体沉淀相(MPt)和无沉淀带(PFZ)均比无Cu合金小,并且随时效时间的延长和温度的升高呈单调的变化。Cu的这种影响可用空位四面体与溶质原子结合成的复杂集团是GP区晶核的模型来说明。 Abstract：The effect of a trace of Cu, about 0.19 wt-％, on the precipitation, the critical nucleation temperature, T_c~′, as well as the microstructural parameters of a commercial purity Al-S.0Zn-1.75Mg alloy has been studied by means of hardness test, optical microscopy and TEM. It was resulted that Cu, in contrast to Cr, is an element by which its homogeneous precipitation is promoted, the T_c~′ is raised from 150—160℃ to 170—180℃ and the hardness is increased, but the grain size is not yet refined and the recrystallization is not yet inhibited. Under the experimental condition of 120—200℃ aging, the grain boundary precipitation, the matrix precipitation and the precipitation-free zone of the Cu-contained alloy are minor to that of Cu-free one. All of these alteration may be monotoneous with elongation of aging time and elevation of aging temperature. Thus, it was proposed that the effect of Cu added on the precipitation and the structural parameters may he explained by a nucleation model which a complex cluster of the vacancy-tetrahedron combined with the segregated solute atoms, such as Zn, Mg and Cu, acts as a nucleus of GP zone. 收稿日期: 1984-01-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 林肇琦 朱继良 孙贵经 杨胜坤 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1984/V20/I1/54 1 Polmear, I.J., Met. Prog., 81 (1962) , 82． 2 Kent, K.G., Weld. Met. Fabr., 35 (1967) , 280． 3 Busby, J.; Cleave, J. F.; Cudd, R.L., J. Inst. Met., 99 (1971) , 41． 4 Truscott, J. M.; Carter, V.E.; Campbell, H.S., ibid., 99 (1971) , 57． 5 林肇琦;孙贵经;许海峰,东北工学院学报,27(1981) ,23． 6 Polmear, I.J.; Scott-Young, P., J. Inst. Met., 87 (1958/59) , 65． 7 Polmear, I.J., ibid., 89 (1960/61) , 51． 8 Smith, W.F.; Grant, N.J., Metall. Trans., 2 (1971) , 1333． 9 馬場義雄,日本金属学会誌 31(1967) ,507． 10 馬場義雄,ibid.,31(1967) ,513． 11 林肇琦;封冰;孙贵经;杨胜坤,金属学报,19(1983) ,A 197． 12 Embury, J.D.; Nicholson, R.B., Acta Metall., 13 (1965) , 403． 13 Lorimer, G.W.; Nicholson, R.B., ibid., 14 (1966) , 1009． 14 Guy、A、G.;Hren,J.J.,物理冶金学原理,徐纪南主译,机械工业出版社,1981,p.276． 15 Noble, B., Acta Metall., 16 (1968) , 393． 16 Smallman,R.E.,现代物理冶金学,张人佶译,冶金工业出版社,1980,p.210． 17 杨胜坤;孙贵经;林肇琦,待发表. 18 Adler, P.; DeIasi, R, ; Geschwind, G., Grumman Research Department Memorandum RM52, November 1971． 19 Thomas, G.; Nutting, J., J. Inst. Met., 88 (1959/60) , 81．f No related articles found! Viewed Full text Abstract Cited   Shared      Discussed