Morphology and Microstructure of Over-sprayed Powder in Spray Forming High Mn ZA35 Alloy

Liu Jingfu1; Li Rongde2; Xie Yi2; Yuan Xiaoguang2

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Morphology and Microstructure of Over-sprayed Powder in Spray Forming High Mn ZA35 Alloy
Vol. 30, Issue 1, Pages: 12-15(2010)
Published： 2010 ，
DOI：

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[1]刘敬福,李荣德,谢懿,袁晓光.喷射成形高锰ZA35合金过喷粉末形貌及组织特征[J].特种铸造及有色合金,2010,30(01):12-15+122.

Liu Jingfu1, Li Rongde2, Xie Yi2, et al. Morphology and Microstructure of Over-sprayed Powder in Spray Forming High Mn ZA35 Alloy. [J]. Special Casting & Nonferrous Alloys 30(1):12-15(2010)
[1]刘敬福,李荣德,谢懿,袁晓光.喷射成形高锰ZA35合金过喷粉末形貌及组织特征[J].特种铸造及有色合金,2010,30(01):12-15+122. DOI：

Liu Jingfu1, Li Rongde2, Xie Yi2, et al. Morphology and Microstructure of Over-sprayed Powder in Spray Forming High Mn ZA35 Alloy. [J]. Special Casting & Nonferrous Alloys 30(1):12-15(2010) DOI：

摘要

采用扫描电子显微镜对喷射成形高锰ZA35合金过喷粉末的形貌及组织进行研究

分析了粉末的粒度组成

计算了粉末的冷却速度

用X射线衍射分析合金相组成。结果表明

过喷粉末尺寸越小

越接近球形

圆整度越好

雾化压力1.0MPa比0.8MPa条件下所得粉末平均粒度更细小;粉末平均冷却速度为104～105K/s

高锰ZA35合金的微观组织主要由富含锰元素的基体α-Al相和η-Zn相组成。

Abstract

Morphology and microstructure of over-sprayed powder in spray forming high Mn ZA35 alloy were observed by SEM（scanning electron microscope）

and particle size in the powder was analyzed

and cooling rate of the powder was calculated

meanwhile

phase constituent in the alloy was analyzed by XRD（X-ray diffraction）.The results indicate that with decreasing in size of the over-sprayed powder

the roundness of the power is increased.The average grain size of the powder prepared by atomization at 1.0MPa is refiner than that of one at 0.8MPa.The average cooling rate of the powder reaches 104～105 K/s.Microstructure of the ZA35 alloy containing high Mn is composed of α-Al phase with rich Mn element and η-Zn phase with rich Mn element.