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首页> 外文期刊>Materials Science and Engineering >Effect introduced high density of precipitates on the microstructural evolutions during multi-direction forging of Al-Zn-Mg-Cu alloy
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Effect introduced high density of precipitates on the microstructural evolutions during multi-direction forging of Al-Zn-Mg-Cu alloy

机译：效果引入高密度沉淀物对Al-Zn-Mg-Cu合金多向锻造过程中的微观结构演进

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摘要

Large number density of coarse precipitates were introduced into the Al-Zn-Mg-Cu alloy by interrupted aging and then over-aging at 300 °C. Both the overaged and homogenized samples were isothermal MDFed at 5 × 10~(-3) s~(-1) with temperatures ranging from 300 °C to 450 °C to investigate the effect of high number density of precipitates on the microstructural evolutions. The results showed that the precipitates decreased gradually during MDF of overaged samples at 300 °C and 350 °C while they were almost dissolved at 400 °C and 450 °C. And as the result of that the precipitates could pin dislocations during deformation, and much greater grain refinement was achieved during MDF of overaged samples at 300 °C and 350 °C.
机译：通过中断老化，然后在300℃下进行过高而引入大量密度的粗沉淀物。经济和均质样品均为5×10〜（-3）S〜（-1）的等温，温度范围为300℃至450℃，以研究大数量沉淀物对微观结构演进的影响。结果表明，在300℃和350℃的储备样品的MDF下，沉淀物在300℃和350℃下逐渐降低，而它们几乎溶解在400℃和450℃。因此，由于沉淀物可以在变形过程中栓脱位，并且在300℃和350℃的覆盖样品的MDF期间实现了更大的晶粒细化。

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  • 来源
    《Materials Science and Engineering》 |2020年第4期|139927.1-139927.10|共10页
  • 作者

    Jiuhui Zhao; Yunlai Deng; Jianguo Tang; Jin Zhang;

  • 作者单位

    Light Alloy Research Institute Central South University Changsha China;

    Light Alloy Research Institute Central South University Changsha China School of Materials Science and Engineering Central South University Changsha China State Key Laboratory of High Performance and Complex Manufacturing Central South University Changsha China;

    Light Alloy Research Institute Central South University Changsha China School of Materials Science and Engineering Central South University Changsha China;

    Light Alloy Research Institute Central South University Changsha China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Multi-directional forging; Al-Zn-Mg-Cu alloys; Recrystallization mechanism; Grain refinement;

    机译：多向锻造;Al-Zn-Mg-Cu合金;重结晶机制;谷物细化;

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