C194铜合金的强化机制研究  

Strengthening Mechanism of C194 Copper Alloy

作　　者：闫晓东[1] 涂思京[1] 黄国杰[1] 谢水生[1] 

机构地区：[1]北京有色金属研究总院有色金属加工工程研究中心,北京100088

出　　处：《稀有金属》2005年第5期635-638,共4页Chinese Journal of Rare Metals

基　　金：国家863计划资助项目(2002AA3Z1000)

摘　　要：为了研究C194铜合金的强化机制,对比分析了两种成分略有不同的C194铜合金带材的力学性能及其微观组织。研究发现C194合金组织中的析出相包括-αFe和Fe3P两种,其中-αFe是C194铜合金的主要强化相,而不是Fe3P。如果合金中P含量较高,则多余的P与合金元素Fe结合形成金属间化合物Fe3P,并以粗大颗粒形式析出,这将导致起主要强化作用的-αFe相数量减少,从而使材料强度降低,同时由于P对合金的导电、导热性能均有显著影响,对材料综合性能不利,因此在生产中应严格控制P的含量,且尽量取下限,抑制Fe3P的形成和析出,促进-αFe在时效过程的弥散析出,从而达到理想的强化效果。To investigate the strengthening mechanism of C194 alloy, the mechanical properties and microstructure of Sample A and Sample B, whose compositions are a little different, were analyzed. It is found that there are two kinds of precipitate phase in C194 alloy： α-Fe and Fe3P, and α-Fe is the primary strengthening phases. If the content of P is excessive, redundant P will combine with alloying element Fe to form Fe3P, and Fe3P will precipitate in the form of big grain. At this rate, the amount of primary strengthening phases α-Fe will reduce, and the strength of C 194 will decrease. At the same time, P has remarkable influence on thermal and electrical conductivity of C 194, and does harm to overall properties of the material. The content of phosphor should be controlled at lower limit during the practice use to restrain the forming of Fe3P and promote the precipitation of α-Fe.

关 键 词：铜合金 C194 析出强化 强化相 

分 类 号：TG146.1[一般工业技术—材料科学与工程]