Microstructure of Lead-free Silicon Brass Prepared with Scraps

Cai Wei; Qiu Guangbin; Li Anyun; Xie Weibin; Wang Gang

doi:10.15980/j.tzzz.2014.08.008

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Microstructure of Lead-free Silicon Brass Prepared with Scraps
Vol. 34, Issue 8, Pages: 868-870(2014)
Published： 2014 ，
DOI： 10.15980/j.tzzz.2014.08.008

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[1]蔡薇,邱光斌,李安运,谢伟滨,王刚.利用废料制备无铅硅黄铜的铸态组织结构[J].特种铸造及有色合金,2014,34(08):868-870.

Cai Wei, Qiu Guangbin, Li Anyun, et al. Microstructure of Lead-free Silicon Brass Prepared with Scraps. [J]. Special Casting & Nonferrous Alloys 34(8):868-870(2014)
[1]蔡薇,邱光斌,李安运,谢伟滨,王刚.利用废料制备无铅硅黄铜的铸态组织结构[J].特种铸造及有色合金,2014,34(08):868-870. DOI： 10.15980/j.tzzz.2014.08.008.

Cai Wei, Qiu Guangbin, Li Anyun, et al. Microstructure of Lead-free Silicon Brass Prepared with Scraps. [J]. Special Casting & Nonferrous Alloys 34(8):868-870(2014) DOI： 10.15980/j.tzzz.2014.08.008.

摘要

以H65、QSn6.5-1及BZn18-26废料为原料制备环保型无铅硅黄铜

研究了Si含量对硅黄铜组织的影响。结果表明

当合金中Si含量为0.2%

.6%时

硅黄铜组织主要由占多数的板条状α相和与之相间分布的β相组成

β相的数量随着Si含量的增加而增加;当Si含量为0.8%时

组织以多边形的β相为基体

α相分布在β相的晶内及晶界处;当Si含量为1.0%时

组织由多边形的β相、大量分布在β相中的细小颗粒状及少量块状物质组成。根据摩尔分数推测这些细小颗粒物是Cu5Si+β或Cu2Mg+β的复合相

并且随着Si含量的增加

细小颗粒状物的数量也明显增多。

Abstract

H65

BZn18-26 and QSn6.5-1scraps were used to prepare lead-free free-cutting Si brass to substitute for HPb59-1.Effects of Si on the structure of brass prepared were investigated.The results show that the Si content in the brass is related obviously with the microstructure of the brass.With the Si content of 0.2%

.6%in the alloy

the alloy is composed ofαphase in board strips shape mainly andβphase

and the amount ofβphase is increased with the increase of Si content.When Si content is0.8%

the matrix isβphase in polygon

andαphase is distributed in grains and boundary.When Si content is 1.0%

the matrix isβphase with a large number of phases in small particle and blocks.It is speculated according to the atomic percentage that the phases belong to composites Cu5Si+βor Cu2Mg+βin tiny granular

and with the increase of Si content

small granular phase is increased significantly.