中國(guó)有色金屬學(xué)報(bào)(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 15 No. 6 December 2005 |
HUANG Bai-yun(黃伯云)1, MA Chang-song(馬長(zhǎng)松)2
（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）
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.
Key words: lead; magnesium; brass; cutting; microstruture; property
