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热轧对连续挤压的AZ31镁合金板材组织和性能的影响
英文标题:Influence of hot rolling on microstructure and properties of AZ31 magnesium alloy sheet processed by continuous extrusion
作者:陈重阳 郭丽丽 
单位:大连交通大学 
关键词:AZ31镁合金 连续挤压 热轧 力学性能 织构 
分类号:TG339
出版年,卷(期):页码:2019,44(9):17-22
摘要:

采用热轧法对厚度为8 mm的连续挤压的AZ31镁合金板材进行减薄加工,实验得到了表面质量良好的AZ31镁合金板材,研究了轧制后AZ31镁合金板材的显微组织和(0002)基面织构极密度的变化规律,分析了热轧板材退火后的拉伸力学性能。结果表明:热轧后的AZ31镁合金板材晶粒组织均匀性得到改善,平均晶粒尺寸为9 μm,板材性能得到显著提高,抗拉强度为266.4 MPa,伸长率为10.2%;经300 ℃保温1 h退火后平均晶粒尺寸为7.4 μm,力学性能再次提高,抗拉强度为257.3 MPa,伸长率达到27.0%。此外,热轧后的板材(0002)基面织构得到改善,随着轧制道次的增加,织构极密度逐渐增加。

The AZ31 magnesium alloy sheet with 8 mm thickness processed by continuous extrusion was thinned by hot rolling, and the AZ31 magnesium alloy sheet with good surface quality was obtained by experiments. Then, the change rules of its microstructure and pole intensity of (0002) basal texture after rolling were studied, and the tensile mechanical properties of the hot rolled sheet after annealing were analyzed. The results show that the microstructure uniformity of the hot rolled AZ31 magnesium alloy sheet is modified, and the average grain size is 9 μm. Therefore, the properties of sheet metal are significantly improved, namely, the tensile strength is 266.4 MPa and the elongation is 10.2%. The average grain size of 7.4 μm is obtained after annealing at 300 ℃ for 1 h, and the mechanical properties are significantly improved again with the tensile strength of 257.3 MPa and the elongation of 27.0%. In addition, the (0002) basal texture of hot rolled sheet is improved, and the pole intensity increases gradually with the increasing of rolling pass.

基金项目:
国家自然科学基金资助项目(51401043)
作者简介:
陈重阳(1993-),女, 硕士研究生 E-mail:chenchongyang444@163.com 通讯作者:郭丽丽(1974-),女,博士, 副教授 E-mail:guolili@djtu.edu.cn
参考文献:


[1]Ma R, Lu Y, Wang L, et al. Influence of rolling route on microstructure and mechanical properties of AZ31 magnesium alloy during asymmetric reduction rolling
[J]. Transactions of Nonferrous Metals Society of China, 2018, 28(5):902-911.



[2]刘迪. AZ31镁合金多道次轧制板材的显微组织及力学性能
[D]. 哈尔滨:哈尔滨工业大学,2017.


Liu D. Microstructure and Mechanical Property of AZ31 Mg Alloy Sheet during Multi-pass Rolling Process
[D]. Harbin:Harbin Institute of Technology,2017.



[3]卢维娜,李希云,张进,等.镁合金板材轧制成形现状及其发展
[J]. 冶金与材料,2018,38(4):58-61.


Lu W N, Li X Y, Zhang J, et al. Present situation and development of rolling forming of magnesium alloy sheet
[J]. Metallurgy and Materials,2018,38(4):58-61.



[4]王永昌. 国内外镁合金板材生产与展望
[J]. 中国新技术新产品,2016,(6):24-26.


Wang Y C. Production and prospect of magnesium alloy sheets at home and abroad
[J]. New Technology & New Products of China,2016,(6):24-26.



[5]郭丽丽,符蓉,裴久杨,等.AZ31镁合金板材连续挤压工艺的实验研究
[J]. 稀有金属材料与工程, 2017, 46(6): 1626-1631.


Guo L L, Fu R, Pei J Y, et al. Experimental studies on AZ31 magnesium sheets processed by continuous extrusion
[J]. Rare Metal Materials and Engineering, 2017,46(6) : 1626-1631.



[6]赵颖,运新兵,闫志勇,等.基于HyperXtrude的铝合金壁板连续挤压技术
[J].塑性工程学报,2017,24(1):79-84.


Zhao Y,Yun X B, Yan Z Y, et al.Continuous extrusion technology of aluminum alloy panels based on HyperXtrude
[J]. Journal of Plasticity Engineering,2017,24 (1) : 79-84.



[7]胡冬,周涛,杨朝,等.轧制变形程度对AZ31镁合金板材组织与性能的影响
[J]. 精密成形工程,2016,8(2):12-14,21.


Hu D, Zhou T, Yang C, et al. Effect of rolling deformation degree on microstructure and properties of AZ31 magnesium alloy sheets
[J]. Journal of Netshape Forming Engineering,2016,8(2):12-14,21.



[8]靳晓坤,郑申白,徐勇,等.轧制工艺对铸轧AZ31镁合金板材组织的影响
[J]. 材料热处理学报,2014,35(9):126-130.


Jin X K, Zheng S B, Xu Y, et al. Effects of rolling process on microstructure of twin roll casting AZ31 magnesium alloy sheet
[J]. Transactions of Materials and Heat Treatment,2014,35(9):126-130.



[9]詹美燕,李元元,陈维平,等.AZ31镁合金轧制板材在退火处理中的组织性能演变
[J]. 金属热处理,2007,32(7):8-12.


Zhan M Y, Li Y Y, Chen W P, et al. Evolution of microstructure and mechanical properties of AZ31 magnesium alloy rolled sheets during annealing
[J]. Heat Treatment of Metals,2007,32(7):8-12.



[10]汪哲能,董勇.轧制温度对大应变轧制AZ31合金板材显微组织和力学性能的影响
[J]. 特种铸造及有色合金,2014,34(3):229-232.


Wang Z N, Dong Y. Effect of rolling temperature on microstructure and mechanical properties of alloys sheets fabricated by severe strain rolling
[J]. Special Casting & Nonferrous Alloys,2014,34(3):229-232.



[11]曾真,信运昌,王茂银,等.孪晶类型对AZ31镁合金静态再结晶的影响
[J]. 材料热处理学报,2012,33(8):33-38.


Zeng Z, Xin Y C, Wang M Y, et al. Influence of twin types on static recrytallization of AZ31 magnesium alloy
[J]. Transactions of Materials and Heat Treatment,2012,33(8):33-38.



[12]石宝东,彭艳,韩宇,等.AZ31镁合金轧制板材各向异性力学性能研究
[J]. 燕山大学学报,2015,39(3):221-225,234.


Shi B D, Peng Y, Han Y, et al. Investigation on anisotropic mechanical behavior of AZ31 Mg alloy rolling sheet
[J]. Journal of Yanshan University,2015,39(3):221-225,234.



[13]杨冲,彭艳,杨硕,等.AZ31镁合金轧制板材各向异性行为的晶体塑性研究
[J]. 燕山大学学报,2016,40(2):123-129.


Yang C, Peng Y, Yang S, et al. Study on anisotropic mechanical behavior of AZ31 Mg alloy sheet based on crystal plasticity modeling
[J]. Journal of Yanshan University,2016,40(2):123-129.

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