摘要
研究了紫铜表面渗铁铝合金原理,用JSM-6380LA型扫描电镜J、ED-2300能谱仪和HMV显微硬度计分析渗层的组织组成、成分分布和显微硬度值,并讨论了铁铝在紫铜中的强化机理。结果表明,Fe-Al合金在铜中强化方式主要是靠Fe、Al元素或形成的CuAl相固溶于铜基体和晶界空位上,使晶格发生歪扭、细化晶粒来提高强度。Fe可使粗片状的共析体改变方向性、片间距减小、组织得到细化、增加组织的结合力,从而提高其力学性能及耐热和耐磨性能。
The principle of permeating iron-aluminium alloy on the surface of red copper was studied,the microstructure of permeating layer, the distribution of the component and the value of microhardness were analysed by the JSM-6380LA scanning electron microscope, JED-2300 energy spectrometer and HMV microhardness instrument,and the strengthening mechanism of iron-aluminium alloy in the red copper was discussed. The results show that the strengthening way of Fe-Al in copper is mainly that Fe, Al or Cu-Al phase dissolve in copper base and the vacancy of grain boundary, which make the crystal lattice crook and the grain refine to improve.the strengthen. Fe can change the directivity of eutectoid, reduce the piece space, refine the grain, increase the binding force, and enhance the synthesis mechanical performance, heat-resisting and wear-resisting performance of copper alloy.
出处
《热加工工艺》
CSCD
北大核心
2007年第20期49-52,共4页
Hot Working Technology
基金
山东省自然科学基金资助项目(Y2005F18)
关键词
紫铜
FE-AL合金
渗层
强化相
red copper
iron-aluminium alloy
permeating layer
strengthening phase
