摘要
用熔融玻璃净化与循环过热相结合的方法，研究了Cu－390Ni－60Fe（mg·g－1）合金过冷熔体凝固组织的演化规律在过冷度25～304K的范围内，其凝固组织的形态有两次突变：第一次是在过冷度110K时，因枝晶熟化被抑制，由枝晶重熔形成的粒状晶转变成高度细化的细枝晶；第二次发生在过冷度180K时。
The microstructure evolution pattern of undercooled Cu-39%Ni-6%Fe (mass percentage) ternary alloy has been investigated with glass fluxing technique combined with cycling process of superheating and cooling. In the undercooling range (25~304K), the microstructure changes two times abruptly. The first abrupt change takes place at 110K of undercooling, and because of the restrained ripening process the microstructure changes into highly developed fine dendrite from granular grain formed at lower undercoolings. The second abrupt change occurs at 180K 0f undercooling and 3kind of even quasi-spherical grain has been formed by recrystallization of the fine dendrite.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
1998年第4期380-384,共5页
Chinese Journal of Materials Research
基金
国家自然科学基金
关键词
过冷
铜镍铁合金
铜合金
凝固组织
undercooling, Cu-Ni-Fe alloy, microstructure evolution
