(東北大學(xué)金屬加工系，沈陽 110006
洛陽銅加工廠，洛陽 471039)
摘 要: 測定了Cu-12.2Al-4.0Mn形狀記憶合金的塑性圖，研究了微量元素Ni，Co和B對合金的顯微組織和加工性能的影響。結(jié)果表明：1）試驗合金在700℃～800 ℃高溫β 相狀態(tài)下具有非常好的塑性加工性能，而在室溫則呈脆性斷裂；2）試驗合金中加入少量的（Ni＋B＋Co），可以細(xì)化合金的晶粒，提高合金的冷加工性能；3)采用有利發(fā)揮合金塑性的加工方法，則能提高該合金的冷加工性能。
關(guān)鍵字: 銅基形狀記憶合金；塑性圖；加工性能
（Department of Metal Forming, Northeastern University, Shenyang 110006, P.R.China
Luoyang Copper Working Plant, Luoyang 471039, P.R.China）
Abstract: A plastic graph was surveyed and the effect of trace elements such as Ni, B and Co on microstructures and working properties of Cu -12.2Al-4.0Mn shape memory alloy was studied. The test results are as follows: 1)The alloy possesses excellent plastic working properties in β phase state at 700～800 ℃, but it occurs brittle breakdown at room temperature; 2 ) Grain was refined and cold workability increased with adding trace elements such as (Ni+B+Co) into the alloy; 3) When the process of favorable heightening technical plasticity of alloy is selected, the cold working performance of the alloy will be enhanced.
Key words: copper base shape memory alloy; plastic diagram; workability
