金属学报  1985, Vol. 21 Issue (2): 25-136

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微量Mn对Al-Zn-Mg合金沉淀过程和显微组织参数的影响

林肇琦;孙贵经;胡维平;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 Mn ON PRECIPITATION AND MICROSTRUCTURAL PARAMETERS OF AN A1-Zn-Mg ALLOY

LIN Zhaoqi;SUN Guijing;HU Weiping;YANG Shenkun Northeast Institute of Technology;Shenyang

林肇琦;孙贵经;胡维平;杨胜坤. 微量Mn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, 1985, 21(2): 25-136.
, , , . EFFECT OF Mn ON PRECIPITATION AND MICROSTRUCTURAL PARAMETERS OF AN A1-Zn-Mg ALLOY[J]. Acta Metall Sin, 1985, 21(2): 25-136.

摘要 参考文献 相关文章 Metrics 全文: PDF(1972 KB)   摘要: 本文利用硬度,光学显微镜和透射电镜研究了微量Mn(0.48wt-%)对Al-5.0Zn-1.8Mg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,并与Cr和Cu的作用特点进行了比较.实验结果表明,Mn能细化晶粒和提高HV,但没有强烈的抑制再结晶和提高T_c~′的作用.在选用的时效条件下(120—200℃),含Mn合金的PFZ比无Mn合金窄,HV比无Mn合金高.在时效初期或进行低温时效(T_a≤160℃),Mn能促进晶界沉淀相(GBP)和基体沉淀相(MPt)的长大,但在时效后期或进行高温时效(Ta≥180℃),Mn又能抑制它们长大,有明显的稳定化作用.Mn对显微组织参数的这种影响与Cr和Cu的影响不同,可用Mn原子集团参与了GP区形核和含Mn之GP区的吞并长大速度慢的观点来说明. Abstract：The effect of 0.48 wt-% Mn,in contrast to Cr or Cu,on the precipitation,critical nucleation temperature,T_c′,and structural parameters of an Al-5.0wt-%Zn-1.8wt-%Mg alloy has been investigated by means of the hardness test,optical microscopy and TEM.It was resulted that the trace Mn addition may re-fine the grain size and increase the hardness,but can not vigorously inhibit the recrys-tallization and not raise T_c′.Under the selected aging condition at 120—200℃,thealloy containing Mn has narrower PFZ and higher HV than Mn-free one.Thetrace Mn may facilitate the growth of GBP and MPt during aging at initial stageor lower temperature≤160℃;however,it will be an obvious stabilizer to retardtheir growth during aging at final stage or elevated temperature≥180℃.Theabovemention to Mn,on the contrary to Cr or Cu,seems to be explained bythe supposition which the Mn cluster would participate the nucleation of GPzone thereafter slow down the rate of the coalescence and growth as well. 收稿日期: 1985-02-18      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 孙贵经 胡维平 杨胜坤 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1985/V21/I2/25 1 村上阳太郎,轻金属,21(1971) ,702． 2 Westerman,E.J.;Fetzer,M.C.,J.Inst.Met.,97(1969) ,206． 3 Thomas,G.;Nutting,J.,J.Inst.Met.,88(1959/60) ,81． 4 Polmear,I.J.,Met.Progr.,81(1962) ,82． 5 Mondolfo,L.F.,Met.Mater.,5(1971) ,207． 6 马场义雄;轻金属,24(1974) ,227． 7 林肇琦;孙贵经;陈长治;许慧恣,东北工学院学报,(1980) ,№3,22． 8 林肇琦;冰封;孙贵经;杨胜坤,金属学报,19(1983) ,A177． 9 林肇琦;朱继良;孙贵经;杨胜坤,金属学报,20(1984) ,A59． 10 Polmear,I.J.;Scott-Young,P.,J.Inst.Met.,87(1958/59) ,65． 11 马场义雄,日本金属学会志,31(1967) ,507． 12 马场义雄,ibid.,31(1967) ,513． 13 藤川辰一郎;平野贤一,马场义雄,日本金属学会会报,7(1968) ,494． 14 马场义雄,轻金属,24(1974) ,547． 15 杨胜坤,孙贵经;林肇琦,待发表.% No related articles found! Viewed Full text Abstract Cited   Shared      Discussed