Effects of B Modification on Microstructure of HPb59-1 Brass

Ni Zifei; Cheng Juqiang; Liu Zhixue

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Effects of B Modification on Microstructure of HPb59-1 Brass
Issue 1, Pages: 70-72(2007)
Published： 2007 ，
DOI：

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[1]倪自飞,程巨强,刘志学.B变质对HPb59-1黄铜组织细化的影响[J].特种铸造及有色合金,2007(01):70-72+11-12.

Ni Zifei, Cheng Juqiang, Liu Zhixue. Effects of B Modification on Microstructure of HPb59-1 Brass. [J]. Special Casting & Nonferrous Alloys (1):70-72(2007)
[1]倪自飞,程巨强,刘志学.B变质对HPb59-1黄铜组织细化的影响[J].特种铸造及有色合金,2007(01):70-72+11-12. DOI：

Ni Zifei, Cheng Juqiang, Liu Zhixue. Effects of B Modification on Microstructure of HPb59-1 Brass. [J]. Special Casting & Nonferrous Alloys (1):70-72(2007) DOI：

摘要

研究了B变质处理及其变质处理后不同的保温时间对HPb59-1黄铜的组织与力学性能的影响。结果表明

HPb59-1黄铜中加入一定量的B可以细化HPb59-1黄铜的组织

改变α和β相组织的分布状态

提高合金的力学性能。细化效果随着B的含量的增加而增强

当B加入量范围在0·008%

·015%时细化效果较好。变质处理后随熔体保温时间的延长

B细化变质效果存在衰退现象

保温10min后浇注

晶粒细化变质效果最好。

Abstract

Effects of B-modification and holding time after modification on the microstructure and mechanical properties of HPb59-1 brass were investigated.A certain amount of element B addition can improve the mechanical properties of the HPb59-1 brass

which is as a result of refining microstructure of the HPb59-1 brass and changing the distribution of α and β phases in the microstructure.Refinement can be improved with increasing in element B addition

in which the desirable refinement can be observed with adding B content in range of 0.008% to 0.015%.Modification effects of element B is fade with extending holding time

where desirable modification effects can be obtained with holding time for 10 min.