Effects of High Temperature Tensile on Microstructure and Mechanical Properties of 2524 Aluminium Alloy

Wang Wenxi; Sun Youping; Wang Songhui; He Jiangmei; Li Wangzhen

doi:10.15980/j.tzzz.2018.02.030

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Effects of High Temperature Tensile on Microstructure and Mechanical Properties of 2524 Aluminium Alloy
Vol. 38, Issue 2, Pages: 227-229(2018)
Published： 2018 ，
DOI： 10.15980/j.tzzz.2018.02.030

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[1]王文熙,孙有平,王松辉,何江美,李旺珍.高温拉伸对2524铝合金显微组织与力学性能的影响[J].特种铸造及有色合金,2018,38(02):227-229.

Wang Wenxi, Sun Youping, Wang Songhui, et al. Effects of High Temperature Tensile on Microstructure and Mechanical Properties of 2524 Aluminium Alloy. [J]. Special Casting & Nonferrous Alloys 38(2):227-229(2018)
[1]王文熙,孙有平,王松辉,何江美,李旺珍.高温拉伸对2524铝合金显微组织与力学性能的影响[J].特种铸造及有色合金,2018,38(02):227-229. DOI： 10.15980/j.tzzz.2018.02.030.

Wang Wenxi, Sun Youping, Wang Songhui, et al. Effects of High Temperature Tensile on Microstructure and Mechanical Properties of 2524 Aluminium Alloy. [J]. Special Casting & Nonferrous Alloys 38(2):227-229(2018) DOI： 10.15980/j.tzzz.2018.02.030.

摘要

在应变速率为10

-4

-1

和温度为250

50℃范围内对2524铝合金板材进行单向热拉伸试验

研究了热变形参数对其显微组织及力学性能的影响。结果表明

当温度为400℃

应变速率为10

-3

-1

时

2524铝合金开始表现出动态再结晶特征

升高温度以及降低应变速率

均有利于动态再结晶发生。在温度为250℃

应变速率为10

-1

时

抗拉强度最高为312 MPa

伸长率最低为13%。当温度恒定为250℃时

随应变速率的减小

抗拉强度降低42.9%

伸长率提高15.4%;当应变速率恒定为10

-1

时

随温度的升高

抗拉强度降低77.2%

伸长率提高285%

断口呈韧性断裂。

Abstract

Tensile tests for 2524aluminum alloy sheet were carried out at 250

50℃and 10

-1

-4

-1

.The effects of thermal deformation parameters on microstructure and mechanical properties of 2524alloy were investigated.The results reveal that the alloy begins to exhibit dynamic recrystallization characteristics at 300℃under strain rate of 10

-3

-1

.With increasing in temperature and decreasing in strain rate

dynamic recrystallization more easily appears.When the temperature is 250℃and the strain rate is10

-1

the tensile strength reaches maximum value of 312MPa

and the elongation reaches minimum value of 13%.At 250℃

the tensile strength is decreases by 42.9%and the elongation is increases by15.4%with the decrease of strain rate.At 10

-1

the tensile strength is decreases by 77.2%and the elongation is increases by 285%with the increase of temperature.The fracture is characterized by ductile fracture.