Effect of Mg on Microstructure and Properties of P-Ca Brass with Lead-free

Zhu Quanli1; Li Wei1; Zhou Jianren1; Zhang Xianman2; Wang Guilong2

doi:10.15980/j.tzzz.2012.06.032

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Effect of Mg on Microstructure and Properties of P-Ca Brass with Lead-free
Vol. 32, Issue 6, Pages: 580-583(2012)
Published： 2012 ，
DOI： 10.15980/j.tzzz.2012.06.032

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[1]朱权利,李微,周建仁,张先满,汪桂龙.镁对磷钙无铅黄铜组织和性能的影响[J].特种铸造及有色合金,2012,32(06):580-583.

Zhu Quanli1, Li Wei1, Zhou Jianren1, et al. Effect of Mg on Microstructure and Properties of P-Ca Brass with Lead-free. [J]. Special Casting & Nonferrous Alloys 32(6):580-583(2012)
[1]朱权利,李微,周建仁,张先满,汪桂龙.镁对磷钙无铅黄铜组织和性能的影响[J].特种铸造及有色合金,2012,32(06):580-583. DOI： 10.15980/j.tzzz.2012.06.032.

Zhu Quanli1, Li Wei1, Zhou Jianren1, et al. Effect of Mg on Microstructure and Properties of P-Ca Brass with Lead-free. [J]. Special Casting & Nonferrous Alloys 32(6):580-583(2012) DOI： 10.15980/j.tzzz.2012.06.032.

摘要

研究了0.3%～0.9%的Mg对P-Ca黄铜显微组织、力学性能和切削性能的影响。通过对显微组织的观察、力学性能和切削性能的检测发现

Mg的加入抑制了P-Ca黄铜组织中片状金属间化合物的出现

使合金的切削性能得到了很好地改善

而硬度和强度没有明显的变化

伸长率明显提高。但是当Mg含量超过0.6%

合金的伸长率反而会急剧下降。含有0.9%的P和0.2%的Ca的P-Ca黄铜中

添加了0.6%的Mg

可使P-Ca黄铜合金力学性能良好

切削性能与铅黄铜接近。

Abstract

Effects of 0.3%～0.9% Mg on the microstructures

mechanical properties and machinability of P-Ca brass with lead-free have been investigated.Through observing the microstructures and detecting properties

it is found that Mg can inhibitor the generation of the lamellate intermetallic compound

improving the machinability distinctly with the slight change of strength and hardness.Meanwhile

the elongation can be increased significantly.However

with the content of Mg more than 0.6%

the elongation is deteriorated sharply.P-Ca brass with 1.0%P

0.2%Ca and 0.6%Mg exhibits appropriate mechanical properties and machinability.