Improved mechanical properties of AZ31 magnesium alloy sheets by repeated cold rolling and annealing using a small pass reduction
Improved mechanical properties of AZ31 magnesium alloy sheets by repeated cold rolling and annealing using a small pass reduction
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通过小道次压下量反复冷轧和退火提高AZ31镁合金板材的机械性能
DOI：
10.1016/j.msea.2015.04.057
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发表时间：
2015-06
期刊：
影响因子：
6.4
通讯作者：
Hongbiao Dong
中科院分区：
文献类型：
--
作者：
Hua Zhang;Weili Cheng;Jianfeng Fan;Bingshe Xu;Hongbiao Dong
由于镁合金的室温加工性能较差，通过冷轧来提高其力学性能的研究较少。因此，本工作试图提高机械性能的AZ31镁合金板材加工的反复冷轧和退火使用一个小的道次压下量与并发的显微组织演变。结果表明，AZ31镁合金板材经过87%的冷轧压下量和退火后，晶粒尺寸由22.3 μm细化到7.4 μm。反复冷轧和退火引起的变形组织和再结晶组织的交替变化导致晶粒不断细化。AZ31镁合金板材经过多次冷轧和退火后，力学性能得到了改善，尤其是87%冷轧试样退火后的Erichsen值（IE）较相同厚度下的原始试样显著提高了36%以上。AZ31镁合金板材经多次冷轧退火后，其力学性能的提高主要归因于晶粒的细化和基体织构的弱化。最后，采用小道次压下量反复冷轧和退火，获得了综合力学性能良好的0.40mm厚薄板。
Much less attention has been paid to improve the mechanical properties of magnesium alloy by cold rolling due to its poor room temperature workability. So the present work attempts to improve the mechanical properties of AZ31 magnesium alloy sheets processed by repeated cold rolling and annealing using a small pass reduction in correlation with the concurrent microstructure evolution. The obtained results indicated that after 87% total repeated cold rolling reduction and annealing, the grain microstructure of AZ31 alloy sheet was successfully refined from 22.3 μm to 7.4 μm. The alternating change induced by repeated cold rolling and annealing between deformed microstructure and recrystallized microstructure resulted in the continued refinement of grains. After repeated cold rolling and annealing, the mechanical properties of AZ31 alloy sheets were improved, especially the Erichsen value (IE) of the 87% total rolled sample in annealed condition was significantly increased by more than 36% compared to that of the as-received sample under the same thickness. Improving mechanical properties of AZ31 alloy sheets processed by repeated cold rolling and annealing are ascribed to the grain refinement and weakened basal texture. Finally, 0.40 mm thick thin sheets with good comprehensive mechanical properties were obtained by repeated cold rolling and annealing using a small pass reduction.
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DOI：
10.1016/0001-6160(57)90075-5
发表时间：
1957-01-01
期刊：
ACTA METALLURGICA
影响因子：
--
作者：
REEDHILL, RE;ROBERTSON, WD
通讯作者：
ROBERTSON, WD
DOI：
10.4028/www.scientific.net/msf.419-422.177
发表时间：
2003-02
期刊：
Materials Science Forum
影响因子：
--
作者：
S. Agnew;O. Duygulu
通讯作者：
S. Agnew;O. Duygulu
影响因子：
6
作者：
Styczynski, A;Hartig, C;Letzig, D
通讯作者：
Letzig, D
镁合金AZ31在循环挤压压缩过程中的显微组织演变
影响因子：
6.2
作者：
Chen, Y. J.;Wang, Q. D.;Hjelen, J.
通讯作者：
Hjelen, J.
影响因子：
17.6
作者：
F. Zheng;Yujuan Wu;L. Peng;Li Xuewen;P. Fu;W. Ding
通讯作者：
F. Zheng;Yujuan Wu;L. Peng;Li Xuewen;P. Fu;W. Ding