挤压AZ91D合金管件组织和力学性能的研究

于宝义; 包春玲; 宋鸿武; 刘正; 于海朋

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挤压AZ91D合金管件组织和力学性能的研究
Microstructure and Mechanical Properties of AZ91D Mg Alloy Extruded Tube
2006年第4期页码：223-225
纸质出版日期： 2006 ，
DOI：

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[1]于宝义,包春玲,宋鸿武,刘正,于海朋.挤压AZ91D合金管件组织和力学性能的研究[J].特种铸造及有色合金,2006(04):223-225+190-191.

Yu Baoyi, Bao Chunling, Song Hongwu, et al. Microstructure and Mechanical Properties of AZ91D Mg Alloy Extruded Tube[J]. Special Casting & Nonferrous Alloys, 2006,(4):223-225.
[1]于宝义,包春玲,宋鸿武,刘正,于海朋.挤压AZ91D合金管件组织和力学性能的研究[J].特种铸造及有色合金,2006(04):223-225+190-191. DOI：

Yu Baoyi, Bao Chunling, Song Hongwu, et al. Microstructure and Mechanical Properties of AZ91D Mg Alloy Extruded Tube[J]. Special Casting & Nonferrous Alloys, 2006,(4):223-225. DOI：

摘要

研究了在挤压温度为430℃时

挤压比对镁合金AZ91D挤压管件组织和力学性能的影响。通过分析挤压过程中镁合金AZ91D组织和力学性能的变化

发现挤压比为7.125时

抗拉强度达到最大值306.9MPa

伸长率达到最大值10.1%。当挤压比增大到7.450时

屈服强度达到最大值285.8MPa

而抗拉强度和伸长率出现下降的趋势。试验发现在高于再结晶温度下（430℃）

通过调整挤压比

控制再结晶的程度

能够获得具有良好力学性能的镁合金AZ91D管件。

Abstract

Effects of extrusion ratio on microstructure and mechanical properties of AZ91D Mg alloy extruded tube at 430 ℃ were investigated.The results show that the maximum tensile strength of 306.9 MPa and maximum elongation of 10.1% can be observed with extrusion ratio of 7.125.With an extrusion ratio of 7.450

the yield strength can be reached 285.8 MPa while the tensile strength and elongation can be decreased.AZ91D Mg alloy extruded tube with excellent mechanical properties can be manufactured by adjusting the extrusion ratio to control recrystallization process in case of more than recrystallization temperature of 430 ℃.