Study on rapid prototyping technology and microstructure and properties of 5356 aluminum alloy

LIU Junling; LIU Zhengwen; JIAO Xiangdong; WANG Longfei; CHEN Yingjie

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Study on rapid prototyping technology and microstructure and properties of 5356 aluminum alloy
Vol. 48, Issue 1, Pages: 43-46(2018)
Published：2018
DOI：
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DOI：

LIU Junling, LIU Zhengwen, JIAO Xiangdong, et al. Study on rapid prototyping technology and microstructure and properties of 5356 aluminum alloy[J]. Eletric Welding Machine2018, 48(1): 43-46. DOI：

摘要

采用MIG焊进行5356铝合金的快速成型试验。利用万能试验机、光学显微镜、扫描电镜等设备研究5356铝合金成型件的形貌、微观组织特点及焊接电流和层间冷却时间对成型组织及力学性能的影响。结果表明

焊后成型件主要存在α（Al）、β（Mg

）和（FeMn）Al

相。当层间冷却时间固定时

随着焊接电流增大

成型件抗拉强度增大。当层间冷却时间为60 s时

焊接电流为90 A

达到最大抗拉强度273.57 MPa。若继续增大电流

抗拉强度降低。当焊接电流固定时

随着层间冷却时间的增加

成型件抗拉强度增大。当层间冷却时间为60 s时

成型件形貌更加美观。

Abstract

he 5356 aluminum alloy rapid prototyping test was carried out by MIG welding. The morphology and microstructure characteristics of 5356 aluminum alloy moldings

effect of welding current and interlayer cooling time on molding structure and mechanical properties were observed by universal testing machine

optical microscope and scanning electron microscope

et al. The results show that there are mainly α（Al）

β（Mg

） and（FeMn）Al

in the forming parts. The tensile strength of the forming parts increases with the increase of welding current in same interlayer cooling time. The highest tensile strength of the forming parts reaches 273.57 MPa when the interlayer cooling time is 60 s

the welding current is 90 A. The tensile strength get decrease when continue to increase the welding current. The tensile strength of the molded parts increases with the increase of interlayer cooling time in same welding current. When the interlayer cooling time is 60 s

the shape of the forming parts is relatively beautiful.