摘要
在生产HAl64 5 4 2过程中 ,解决了Fe、Mn的熔化及均匀化、无缺陷铸锭的生产方法、管材直度控制等工艺关键问题。合金的熔点 910 .4℃ ,流点 949.2℃ ,相变热焓 114 .6J/g ;热加工性能优良 ;在高于 5 5 0℃时其组织是 β相 ,在低于5 5 0℃时其组织是α +β相 ,耐磨颗粒是多元富铁相 ;力学性能分别为σb=796MPa ,σ0 .2 =675MPa ,δ5=2 0 % ,HB =2 18。
HAl64-5-4-2 alloy is one of complex brasses with high strength, wear resistance and impact resistance used for car's synchronous gear ring and other wear resistant parts. In the process of extruded tube production, some key technologies, such as smelting and uniformity of Fe, Mn, production technique of non-defective ingot, control of tube straightness, were optimized. The specification was showed as follows: melting point of the alloy 910.4 ℃;flowing point 949.2 ℃; △H114.6 J/g, and excellent heat workability. Microstructure of the alloy-β phase at more than 550 ℃; while α+β phase at less than 550 ℃, wear resistant particle with multi-element rich Fe phase. The maximum mechnical properties σ b=796 MPa, σ 0.2=675 MPa,δ 5=20%, HB=218. The relation between microstructure and the properties was examined under different heat treatment conditions.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2003年第3期18-20,共3页
Special Casting & Nonferrous Alloys
基金
国家"8 63"计划资助项目 (863 - 71 5- 0 1 2 - 0 1 4 0 )
关键词
复杂铝黄铜
工艺
相变
组织
Complex Al-brass, Technology, Phase Transformation, Microstructure
