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

汪哲能; 董勇

doi:10.15980/j.tzzz.2014.03.007

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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
Effect of Rolling Temperature on Microstructure and Mechanical Properties of AZ31 Alloys Sheets Fabricated by Severe Strain Rolling
2014年34卷第3期页码：229-232
纸质出版日期： 2014 ，
DOI： 10.15980/j.tzzz.2014.03.007

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[1]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(03):229-232.

Wang Zheneng, Dong Yong. Effect of Rolling Temperature on Microstructure and Mechanical Properties of AZ31 Alloys Sheets Fabricated by Severe Strain Rolling[J]. Special Casting & Nonferrous Alloys, 2014,34(3):229-232.
[1]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(03):229-232. DOI： 10.15980/j.tzzz.2014.03.007.

Wang Zheneng, Dong Yong. Effect of Rolling Temperature on Microstructure and Mechanical Properties of AZ31 Alloys Sheets Fabricated by Severe Strain Rolling[J]. Special Casting & Nonferrous Alloys, 2014,34(3):229-232. DOI： 10.15980/j.tzzz.2014.03.007.

摘要

采用大应变轧制技术制备AZ31合金板材

研究了轧制温度对板材显微组织、宏观织构和力学性能旳影响。结果表明

轧制温度为200℃时

板材发生开裂

轧制温度升高至250

00℃时

大应变轧制可以成功进行;在250

00℃的轧制温度范围内

板材再结晶晶粒尺寸和基面织构强度随轧制温度的升高而增大

其力学性能则随轧制温度的升高而下降;轧制温度为250℃时

板材具有良好的综合力学性能

其抗拉强度、屈服强度和伸长率分别为325.7 MPa、213.2 MPa和29.8%。

Abstract

AZ31 magnesium alloy sheets were fabricated by severe strain rolling

and effects of rolling temperature on microstructure

texture and mechanical properties of the sheets prepared were investigated.The results show that large strain rolling can be used successfully to fabricate AZ31 magnesium alloy sheets in the temperature range of 250

00 ℃

while crack occurs with rolled at 200 ℃.The dynamic recrystallization（DRX）grain size and maximum pole density of the sheets rolled in range of 250

400℃ are increased while the mechanical properties are decrease with the rolling temperature increase. The sheet rolled at 250 ℃ exhibits excellent mechanical properties

and the tensile strength

yield strength and elongation of the sheets reach 327.5MPa

213.2MPa and 29.8%

respectively.