| Microstructure and properties of cutting magnesium-brass containing no lead |
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| 引用本文： | 黄劲松 彭超群 章四琪 黄伯云 马长松. Microstructure and properties of cutting magnesium-brass containing no lead[J]. 中国有色金属学会会刊, 2005, 15(6): 1242-1247 |
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| 作者姓名： | 黄劲松 彭超群 章四琪 黄伯云 马长松 |
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| 作者单位： | [1]State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China [2]School of Materials Science and Engineering, Central South University, Changsha 410083, China |
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| 基金项目： | Project （05JJ30194） supported by the Natural Science Foundation of Hunan Province, China |
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| 摘 要： | 1 INTRODUCTIONLead-brass has excellent cutting ability , me-chanical and physical properties and is one of themost widely used copper alloys . The occupationratio of brass tube to all kinds of tubes reaches90 % in developed countries . The cutting lead-brass is a dual-phase brass and fine lead particlesdistribute dispersivelyin grains and on grain boun-ries . Theleadin wasted brass can easily beleachedand dissolvedinto soil .If the wasted lead-brass isburned in air ,the lead will become p…
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| 关 键 词： | 镁合金 黄铜 切割 显微结构 机械性能 |
| 文章编号： | 1003-6326（2005）06-1242-06 |
| 收稿时间： | 2005-01-11 |
| 修稿时间： | 2005-09-26 |
Microstructure and properties of cutting magnesium-brass containing no lead |
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| HUANG Jin-song,PENG Chao-qun,ZHANG Si-qi,HUANG Bai-yun,MA Chang-song. Microstructure and properties of cutting magnesium-brass containing no lead[J]. Transactions of Nonferrous Metals Society of China, 2005, 15(6): 1242-1247 |
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| Authors: | HUANG Jin-song PENG Chao-qun ZHANG Si-qi HUANG Bai-yun MA Chang-song |
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| Abstract: | A new environmental friend cutting brass containing magnesium instead of lead was produced by casting, extruding and drawing. Its microstructure was observed and its mechanical, chemical and cutting properties were stutied. The results show that the global secondary particles which are brittle and soft intermetallics, distribute in grains and on grain boundries, which is helpful for improvement of cutting ability of the brass. The tensile strength, yield strength, elongation and area reduction of halfhard magnesium-brass are 550MPa, 280MPa, 16.30%, 32.4%, respectively. The cutting ability of magnesium-brass corresponds to that of lead-brass C3604 judged by the size and appearance of chips of alloy and by the cutting force. The magnesium-brass has excellent corrosion resistance. |
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| Keywords: | lead magnesium brass cutting microstruture property |
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