High strength and ductile high solid solution Al–Mg alloy processed by a novel hard-plate rolling route
High strength and ductile high solid solution Al–Mg alloy processed by a novel hard-plate rolling route
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新型硬板轧制工艺制备高强韧高固溶铝镁合金
DOI:
10.1016/j.jallcom.2017.09.017
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发表时间:
2017-12
期刊:
影响因子:
--
通讯作者:
Hui-Yuan Wang
中科院分区:
文献类型:
--
作者:
Min Zha;Xiang-Tao Meng;Hong-Min Zhang;Xuan-He Zhang;Hai-Long Jia;Yan-Jun Li;Jun-Yu Zhang;Hui-Yuan Wang
Achieving bimodal grain structure via cold rolling remains a challenge for Al–Mg alloys. In the present work, a high tensile strength (∼525 MPa) and ductile (∼14%) Al–9Mg alloy was fabricated by a novel hard-plate rolling (HPR) route with a single-pass thickness reduction of 75%. Increasing solute Mg content promotes a bimodal structure and a high dislocation density in the HPRed Al–Mg alloys due to the severely retarding effect of Mg solutes on dynamic recovery/recrystallization. The simultaneous high ductility and strength is due mainly to the strong work hardening ability deriving from the bimodal grain structure and the high solute Mg content.
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