摘要
采用累积叠轧工艺制备了1mm厚的Al-Mn合金板,研究了不同轧制道次下Al-Mn合金板的微观组织和力学性能变化规律,并分析了累积叠轧工艺的作用机理。结果表明,随着累积叠轧道次的增加,Al-Mn合金板中的实际界面数与理论界面数的差距变大,结合程度不断提高;不同累积叠轧道次下Al-Mn合金板的抗拉强度、屈服强度和显微硬度都相对累积叠轧前有所提高,且随着累积叠轧道次的增加,合金板的抗拉强度逐渐增加,而不同叠轧道次下试样的断后伸长率较为接近;累积叠轧试样的衍射峰中心朝着低角度移动,且半峰宽与叠轧前相比有明显减小,而合金局部应变在累积叠轧后有所增加。
The Al-Mn alloy sheet with thickness of 1 mm was prepared by accumulative rolling process. The microstructure and mechanical properties of the Al-Mn alloy sheet under different rolling passes were studied. And the mechanism of accumulative rolling process was analyzed. The results show that with the increase of accumulative rolling pass,the difference between the number of actual interface and the number of theoretical interfaces in Al-Mn alloy sheet becomes larger, and the degree of bonding increases; the tensile strength, yield strength and micro-hardness of the Al-Mn alloy sheet under different accumulative passes are improved compared to those before accumulative rolling, and with the accumulative rolling pass increasing, the tensile strength of the alloy sheet increases gradually, and the elongation after fracture of the specimens at different accumulative rolling passes is close; the center of the diffraction peak of the accumulative rolling sample moves towards low angle, and the half peak width decreases obviously compared with that before rolling, while the local strain of the alloy increases after the accumulative rolling.
作者
赖笑
沈冠豪
刘超
LAI Xiao;SHEN Guanhao;LIU Chao(School of Engineering and Technology of chengdu University of Technology, Leshan 614000, China)
出处
《热加工工艺》
CSCD
北大核心
2018年第11期120-123,127,共5页
Hot Working Technology
基金
四川省教育厅科研项目(17ZB0065)
成都理工大学工程技术学院院级青年基金项目(C122016022)
四川省教育厅大学生创新创业训练项目(201713668064)
关键词
Al-Mn合金板
累积叠轧
显微组织
力学性能
Al-Mn alloy plate
accumulative rolling
microstructure
mechanical properties
