摘要
将加工黄铜的含锌质量分数升高至接近５０％，相组成由原来的（α＋β）转变成为β或（β＋γ）。γ相是一种硬脆的电子化合物，铸态时沿β相基体晶界成网状分布，在β相晶内者则呈粗大星花状，给压力加工带来不利。研究表明，采用变质处理方法可以改变（β＋γ）两相黄铜中γ相的形状、尺寸和分布状态，改善其加工和使用性能，同时，变质处理可使γ相的硬度降低和体积分数减少。
The microstructures of working brass with high zinc content up to 50 percent or more in weight have been changed from the inherent structure (α+β) into β phase or (β+γ), The γ phase, a hard and brittle electron compound, is distributed onto grain boundary of β phase with cellular structure and within β phase grain with coarse star flower like in as cast condition in connection with the detrimental effect occurs during pressure working. A modification technique has been used to change the form, size and distribution of γ phase in the brass with two phases (β+γ), so that the workability and usability of the brass have been significantly improved. Meanwhile, the hardness and volume fraction of γ phase have also been remarkably decreased by modification.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
1998年第5期21-23,共3页
Special Casting & Nonferrous Alloys
关键词
黄铜
变质处理
Γ相
铜
压力加工
Working Brass with High Zinc Content, Modification, γ Phase
