微量Zr添加对6082铝合金热变形再结晶组织演变的影响
Effect of minor Zr addition on recrystallization microstructure evolution of 6082 aluminum alloy during hot deformation
查看参考文献19篇
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文摘
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为探究微量Zr合金化对6082铝合金热变形组织及其后续热处理过程中再结晶的影响,对比研究6082铝合金和含Zr的6082铝合金在不同应变速率(0.01,1 s~(-1))下的热变形行为及微取向演变,分析热处理前后晶粒组织的演变过程,进一步讨论添加Zr对6082铝合金的热变形亚晶组织和再结晶组织的调控作用。结果表明:添加Zr使6082铝合金在热变形过程中的再结晶以不连续动态再结晶为主,同时也发生了粒子激发形核(particle stimulated nucleation,PSN)机制产生的再结晶,在热变形过程中,Zr还起到了抑制再结晶的作用。微量Zr合金化后亚晶尺寸减小、位错密度增加,再结晶水平降低,且应变速率越高的试样再结晶水平越低,Zr的加入促进了6082铝合金在热变形过程中不连续动态再结晶的产生。 |
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其他语种文摘
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To explore the effect of micro-Zr alloying on the hot deformation microstructure of 6082 aluminum alloy and its subsequent recrystallization during heat treatment,the hot deformation behavior and micro-orientation evolution of 6082 aluminum alloy containing Zr at different strain rates(0.01,1 s~(-1)) were comparatively studied.The evolution process of grain structure before and after heat treatment was analyzed,and the regulatory effect of Zr addition on the thermally deformed sub-grains and recrystallization of 6082 aluminum alloy was further discussed.The results show that the addition of Zr makes the recrystallization of 6082 aluminum alloy during the hot deformation process mainly perform discontinuous dynamic recrystallization,and the recrystallization generated by the particle stimulated nucleation(PSN) mechanism also occurs,and minor Zr addition also plays a role in inhibiting recrystallization in the hot deformation process.After the micro-Zr alloying,the subgrain size decreases,the dislocation density increases,the recrystallization level decreases,and the recrystallization level of the sample at a higher strain rate is lower,and the addition of Zr promotes the generation of the discontinuous dynamic recrystallization of 6082 aluminum alloy during hot deformation. |
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来源
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材料工程
,2024,52(9):133-140 【核心库】
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DOI
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10.11868/j.issn.1001-4381.2022.001006
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关键词
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Al-Mg-Si合金
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Zr
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亚晶
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再结晶
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位错密度
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热变形
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地址
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1.
中车工业研究院(青岛)有限公司, 山东, 青岛, 266031
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中南大学轻合金研究院, 长沙, 410083
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中南大学材料科学与工程学院, 长沙, 410083
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-4381 |
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学科
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一般工业技术;金属学与金属工艺 |
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文献收藏号
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CSCD:7814485
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