Effects of Sb Modification on Microstructure and Mechanical Properties of ZL107 Alloy

Wang Wuhong; Yao Sanjiu; Yin Tianzhi; Dai Rong

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Effects of Sb Modification on Microstructure and Mechanical Properties of ZL107 Alloy
Vol. 29, Issue 5, Pages: 465-467(2009)
Published： 2009 ，
DOI：

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[1]王武宏,姚三九,尹天智,代蓉.Sb变质对ZL107合金组织与性能的影响[J].特种铸造及有色合金,2009,29(05):465-467+390-391.

Wang Wuhong, Yao Sanjiu, Yin Tianzhi, et al. Effects of Sb Modification on Microstructure and Mechanical Properties of ZL107 Alloy. [J]. Special Casting & Nonferrous Alloys 29(5):465-467(2009)
[1]王武宏,姚三九,尹天智,代蓉.Sb变质对ZL107合金组织与性能的影响[J].特种铸造及有色合金,2009,29(05):465-467+390-391. DOI：

Wang Wuhong, Yao Sanjiu, Yin Tianzhi, et al. Effects of Sb Modification on Microstructure and Mechanical Properties of ZL107 Alloy. [J]. Special Casting & Nonferrous Alloys 29(5):465-467(2009) DOI：

摘要

ZL107合金经Sb变质后

能有效地使共晶Si由板条状变为粒状与孤块状

使α-Al枝晶分布均匀

并使棒状Al2Cu向小颗粒状转化。加入0.20%的Sb变质时

合金组织最为均匀

力学性能也最好。Sb进入合金后

吸附在Si的表面

阻碍了共晶Si的生长

使共晶Si片厚度的增加受到了抑制

AlSb质点的增多为α-Al形提供支撑

使α-Al枝晶变得发达

分布均匀。经过T6处理后

合金的组织和力学性能得到进一步改善提高。

Abstract

The eutectic Si phase in ZL107 alloy with Sb modification is converted from lamellar structure into particle and isolated block with the uniform distribution of α-Al dendrite and transformation of rod-like Al2Cu into Al2Cu particle.The desirable mechanical properties of the ZL107 alloy with 0.2% Sb modification can be observed as a result of uniform constituent distribution.Sb absorbed at the surface of Si phase can restrict the increase of the thickness of eutectic Si by restraining the growth of eutectic Si

meanwhile

the developed α-Al dendrite with uniform distribution can be observed as a result of increasing in AlSb phase as nuclei

which are responsible for the improvement of mechanical properties of ZL107 alloy with Sb modification.The microstructure and properties of the modified alloy is further improved after T6 treatment.