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大规格铸态7005铝合金的双级均热工艺优化
Optimization of Two-stage Soaking Process for Large-size As-Cast 7005 As-Cast 7005 Aluminum Alloy
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- DOI:
- 作者:
- 何小峰 莫灼强 蒋秋妹 赵启忠 黄奎
HE Xiaofeng-;MO Zhuoqiang;JIANG Qiumei;ZHAO Qizhong;HUANG Kuiu
- 作者单位:
- 广西南南铝加工有限公司 广西铝合金材料与加工重点实验室
Guangxi Alnan Aluminum Fabrication Co.,Ltd.,Nanning 530031,China;Guangxi Key Laboratory of Materials and Processes of Aluminum Alloys,Nanning 530031,China
- 关键词:
- 铸态7005铝合金 双级均热工艺 显微组织 硬度 节能降本
as-cast 7005 aluminum alloy two-stage homogenization treatment process microstructure hardness energy conservation and cost reduction
- 摘要:
- 为优化工业化生产耗时长、耗能高、效率低的旧双级均热工艺,采用OM、SEM、图像分析软件及布氏硬度计,研究了双级均热工艺对大规格铸态7005铝合金圆锭显微组织和硬度的影响。结果表明:经450℃×2h+470℃×32h双级均热处理后,MgZn2弥散质点完全溶解,仅残留难溶的AlMnFe、AlMnFeSi等含Fe化合物相,均热效果与旧工艺的均热效果一致,可实现工业化节能降本提质增效的生态生产。
In order to optimize the old two-stage homogeneous heat treatment process,which was time-consuming,energy-consuming and inefficient in industrial production,OM,SEM,image analysis software and Brinell hardness tester were used to study the effect of two-stage homogeneous heat treatment process on microstructure and hardness of large-size as-cast 7005 aluminum alloy round ingot.The results show that the MgZn2 dispersing particle is completely dissolved after the dual-stage homogenization treatment at 450℃×2 h+470℃×32 h,and only the remaining refractory phases of Al MnFe,Al MnFeSi and other Fe-containing compounds remained.The homogenization effect is consistent with that of the old process,and the ecological production of energy saving,quality improvement and efficiency enhancement could be realized in industrialization.