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.
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(Guangxi Alnan Aluminum Fabrication Co.,Ltd.,Nanning 530031,China;Guangxi Key Laboratory of Materials and Processes of Aluminum Alloys,Nanning 530031,China)
出处
《铸造技术》
CAS
2020年第3期223-227,共5页
Foundry Technology
基金
广西南宁市江南区科技重大专项项目(2019010201)。
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