Behavior of Bi in the Free-cutting Unleaded Brass and Its Effects on the Mechanical Properties of the Brass

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Behavior of Bi in the Free-cutting Unleaded Brass and Its Effects on the Mechanical Properties of the Brass
Vol. 30, Issue 11, Pages: 1072-1074(2010)
Published： 2010 ，
DOI：

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[1]王均,闫静,唐生渝,熊计,金鑫,沈保罗.Bi在无铅易切削黄铜中的行为和对力学性能的影响[J].特种铸造及有色合金,2010,30(11):1072-1074+980.

Behavior of Bi in the Free-cutting Unleaded Brass and Its Effects on the Mechanical Properties of the Brass. [J]. Special Casting & Nonferrous Alloys 30(11):1072-1074(2010)
[1]王均,闫静,唐生渝,熊计,金鑫,沈保罗.Bi在无铅易切削黄铜中的行为和对力学性能的影响[J].特种铸造及有色合金,2010,30(11):1072-1074+980. DOI：

Behavior of Bi in the Free-cutting Unleaded Brass and Its Effects on the Mechanical Properties of the Brass. [J]. Special Casting & Nonferrous Alloys 30(11):1072-1074(2010) DOI：

摘要

HPb59-1铅黄铜是一种应用广泛的合金

但是由于铅具有很大的危害作用

所以选取Bi元素取代铅黄铜中的Pb。研究不同工艺条件下其在黄铜中的行为和对力学性能的影响

以期生产出在价格上和铅黄铜相差不多

而性能上完全可以取代铅黄铜的无铅黄铜。研究发现

Bi在黄铜中呈不规则长条块状或者球状颗粒偏聚在α相的晶界上

不易溶于β相

并且Bi黄铜在性能上完全可以取代铅黄铜。

Abstract

Behavior of Bi in the free-cutting unleaded brass at different conditions and its effects on the mechanical properties of the brass were investigated in order to produce the free-cutting unleaded brass which can totally replace the leaded brass in price and performance.The results reveal that Bi phase with irregular strip or spherical particles is segregated on grain boundary of α phase

which is hardly dissolved in β phase.In addition

Bi brass can replace the Pb brass completely in performance..