AZ61镁合金在不同挤压温度下的组织与力学性能

张广俊; 龙思远; 曹凤红

English Version

轻有色合金 | 浏览量 : 40 下载量: 469 CSCD: 8

导出
分享给微信好友或者朋友圈

分享
收藏
专辑

AZ61镁合金在不同挤压温度下的组织与力学性能
Effects of Varied Hot Extrusion Temperature on Microstructure and Mechanical Properties of AZ61 Magnesium Alloy
- 角色： First author 第一作者
- 机构：
  重庆大学机械工程学院,镁合金国家工程技术研究中心
张广俊
1 ，
- 机构：
  重庆大学机械工程学院,镁合金国家工程技术研究中心
龙思远
1 ，
- 机构：
  重庆大学机械工程学院,镁合金国家工程技术研究中心
曹凤红
1
2009年29卷第3期页码：270-272
纸质出版日期： 2009 ，
DOI：

扫描看全文

引用
[1]张广俊,龙思远,曹凤红.AZ61镁合金在不同挤压温度下的组织与力学性能[J].特种铸造及有色合金,2009,29(03):270-272+195.

Zhang Guangjun, Long Siyuan, Cao Fenghong. Effects of Varied Hot Extrusion Temperature on Microstructure and Mechanical Properties of AZ61 Magnesium Alloy[J]. Special Casting & Nonferrous Alloys, 2009,29(3):270-272.
[1]张广俊,龙思远,曹凤红.AZ61镁合金在不同挤压温度下的组织与力学性能[J].特种铸造及有色合金,2009,29(03):270-272+195. DOI：

Zhang Guangjun, Long Siyuan, Cao Fenghong. Effects of Varied Hot Extrusion Temperature on Microstructure and Mechanical Properties of AZ61 Magnesium Alloy[J]. Special Casting & Nonferrous Alloys, 2009,29(3):270-272. DOI：

摘要

对变形镁合金AZ61铸态试样和不同温度下的挤压成形试样的微观组织结构、室温力学性能以及拉伸断口进行了研究。结果表明,360℃的热挤压温度不能成形试样,在370、385、400℃下进行热挤压可以得到外形完整、表面光洁的试样;随着挤压温度提高,AZ61挤压试样发生再结晶的晶粒数量显著增加,达到400℃时形成均匀细小的等轴晶组织;370、385、400℃下的挤压试样断口均表现为明显的塑性断裂特征,400℃时挤压试样的抗拉强度达到297.43MPa,屈服强度达到221.42MPa,伸长率为22.39%,具有较好的力学性能。

译

Abstract

After homogenized annealing at（390±10）℃ for 12 hours,AZ61 alloy was hot extruded at 360,370,385 and 400℃ with extrusion ratio of 32:1.Microstructure,mechanical properties and tensile fracture of annealed specimens and hot extruded specimens were investigated.A complete and finished product can be obtained by extruding AZ61 magnesium alloy at 370,385 and 400 ℃,however,it can not be produced by extruding at 360 ℃.With increasing in extrusion temperature,the numbers of recrystallization grain in the extruded AZ61 magnesium alloy are increased greatly,in which the uniformly fine equaixed grain are observed in the extruded specimens at 400 ℃.In addition,the specimens extruded at 370,385 and 400 ℃ are characterized by ductile fracture mechanism,and the specimens extruded at 400 ℃ exhibits excellent performance with tensile strength of 297.43MPa,yield strength of 221.42 MPa and elongation of 22.39%.

译

关键词

AZ61镁合金; 热挤压; 微观组织; 力学性能

译

Keywords

AZ61 Magnesium Alloy; Hot Extrusion; Microstructure; Mechanical Properties

译

摘要

对变形镁合金AZ61铸态试样和不同温度下的挤压成形试样的微观组织结构、室温力学性能以及拉伸断口进行了研究。结果表明

360℃的热挤压温度不能成形试样

在370、385、400℃下进行热挤压可以得到外形完整、表面光洁的试样;随着挤压温度提高

AZ61挤压试样发生再结晶的晶粒数量显著增加

达到400℃时形成均匀细小的等轴晶组织;370、385、400℃下的挤压试样断口均表现为明显的塑性断裂特征

400℃时挤压试样的抗拉强度达到297.43MPa

屈服强度达到221.42MPa

伸长率为22.39%

具有较好的力学性能。

Abstract

After homogenized annealing at（390±10）℃ for 12 hours

AZ61 alloy was hot extruded at 360

370

385 and 400℃ with extrusion ratio of 32:1.Microstructure

mechanical properties and tensile fracture of annealed specimens and hot extruded specimens were investigated.A complete and finished product can be obtained by extruding AZ61 magnesium alloy at 370

385 and 400 ℃

however

it can not be produced by extruding at 360 ℃.With increasing in extrusion temperature

the numbers of recrystallization grain in the extruded AZ61 magnesium alloy are increased greatly

in which the uniformly fine equaixed grain are observed in the extruded specimens at 400 ℃.In addition

the specimens extruded at 370

385 and 400 ℃ are characterized by ductile fracture mechanism

and the specimens extruded at 400 ℃ exhibits excellent performance with tensile strength of 297.43MPa

yield strength of 221.42 MPa and elongation of 22.39%.