Ultra-fast bake-hardening response of Al-Mg-Si-Cu-Zn alloys with the assistance of heterogeneous nucleation
Ultra-fast bake-hardening response of Al-Mg-Si-Cu-Zn alloys with the assistance of heterogeneous nucleation
复制标题
异质成核辅助下 Al-Mg-Si-Cu-Zn 合金的超快烘烤硬化响应
DOI:
10.1016/j.jmrt.2022.03.018
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发表时间:
2022-03
期刊:
影响因子:
--
通讯作者:
Jishan Zhang
中科院分区:
文献类型:
--
作者:
Liang Zhu;Mingxing Guo;Yuan Wu;Huihui Zhu;Jishan Zhang
Mg-Si clusters or precipitates can make Al-Mg-Si alloys stronger, but the low bake-hardening response severely restricts their wide application in the automotive field. Here, we report a new strategy to significantly enhance the bake-hardening response of Al-Mg-Si-Cu-Zn alloys to the highest value of 167 MPa, compared with values of traditional 6xxx series alloys (such as, AA6016, AA6111 and AA6022). The ultra-fast bake-hardening response is mainly obtained by the synergy of homogeneous/heterogeneous nucleation of Zn-containing precipitates during the heat treatments. The process discovered here is amenable to large-scale automotive industrial production at low cost, and might be applicable to other Al alloy systems.
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期刊:
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