单辊快淬Cu-Be合金的显微组织及时效性能  

Microstructure and Aging Hardening Properties of Cu-Be Alloy Prepared by Rapid Solidification with Single Roller

作　　者：安建军[1] 云翠花[1] 严彪[1] 

机构地区：[1]同济大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2008年第7期567-569,共3页Special Casting & Nonferrous Alloys

基　　金：上海市科委资助项目(0752nm004)

摘　　要：对单辊快淬技术制备的Cu—Be合金的显微组织及时效性能进行了研究。试验通过XRD，ESEM以及TEM等材料表征手段观察了合金的显微组织，发现单辊快淬CuBe合金显微组织主要由面心立方结构的α固溶体、及呈小颗粒状弥散其中的不连续沉淀γ相组成，并且整个组织呈现十分细小的等轴晶粒（1～2μm），时效沉淀过程直接影响合金硬度的变化。Microstructure and aging hardening behavior of Cu-Be alloy prepared by rapid solidification with single roller were investigated by XRD(X-ray diffraction), ESEM and TEM. The results show that microstructure of the Cu-Be alloy is composed of supersaturated α phase, in which a large amount of nanoscale γ transition precipitated phase can be found, and fine island-shape β phase dispersed homogeneously in the matrix, exhibiting very fine equiaxed grain with size of 1~2μm. Meanwhile, the hardness of the alloy is directly related to the aging precipitation process.

关 键 词：单辊快淬 时效硬化 显微结构 等轴晶粒 

分 类 号：TG146.11[一般工业技术—材料科学与工程]