Inhomogeneity of Microstructures and Properties of Magnesium Alloy Extrusion Billets Contained Nd by Spray Deposition

Li Zhenliang; Yuan Aiping; Zhang Jing; Wu Lang; Chen Wei; Zhai Jing

doi:10.15980/j.tzzz.2014.11.030

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Inhomogeneity of Microstructures and Properties of Magnesium Alloy Extrusion Billets Contained Nd by Spray Deposition
Vol. 34, Issue 11, Pages: 1214-1217(2014)
Published： 2014 ，
DOI： 10.15980/j.tzzz.2014.11.030

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[1]李振亮,袁爱萍,张婧,吴朗,陈伟,翟景.喷射沉积含Nd镁合金挤压坯的组织及性能不均匀性[J].特种铸造及有色合金,2014,34(11):1214-1217.

Li Zhenliang, Yuan Aiping, Zhang Jing, et al. Inhomogeneity of Microstructures and Properties of Magnesium Alloy Extrusion Billets Contained Nd by Spray Deposition. [J]. Special Casting & Nonferrous Alloys 34(11):1214-1217(2014)
[1]李振亮,袁爱萍,张婧,吴朗,陈伟,翟景.喷射沉积含Nd镁合金挤压坯的组织及性能不均匀性[J].特种铸造及有色合金,2014,34(11):1214-1217. DOI： 10.15980/j.tzzz.2014.11.030.

Li Zhenliang, Yuan Aiping, Zhang Jing, et al. Inhomogeneity of Microstructures and Properties of Magnesium Alloy Extrusion Billets Contained Nd by Spray Deposition. [J]. Special Casting & Nonferrous Alloys 34(11):1214-1217(2014) DOI： 10.15980/j.tzzz.2014.11.030.

摘要

以喷射沉积技术制备出Mg-Al-Zn系合金沉积坯

对其尺寸不均匀的挤压坯在高度、厚度方向上进行性能与微观组织的不均匀性研究。结果表明

挤压坯高度方向硬度值几乎没有变化

而壁厚方向硬度值则表现出"中间层小、内外层大"的规律

挤压过程中沉积坯塑性变形的不均匀是影响镁合金挤压坯组织及性能不均匀性的主要原因。

Abstract

The Mg-Al-Zn alloy billets were produced by spraying deposition method

and the extrusion billet exhibits asymmetry in the size.The inhomogeneity of microstructures and properties of extrusion magnesium alloy billets was investigated at height and thickness direction.The results indicate that the hardness value change of the extrusion billet at height direction can be ignored

while hardness at thickness direction presents the rule of smaller intermediate layer

larger inner and outer layers.Non-uniform plastic deformation of deposition billet in the process of extrusion plays a key role in affecting the inhomogeneity of microstructures and performance of extrusion billet.