K红金首饰脆裂问题的探讨

Discussion on the brittle rupture problem of karat red gold jewelry

K红金以其独特的颜色成为近年来非常盛行的首饰材料。该合金以铜作为主要合金元素,而铜原子与金原子容易形成脆性的有序固溶体,使K红金首饰制作中常出现脆裂问题。影响K红金有序化转变的因素有合金成分、冷却方式、形变工艺等,通过合理设计K红金的成分配比,使K红金饰件在高温受热后快速冷却,在形变加工过程中采用正确热处理方法等途径,可以避免K红金发生脆裂问题。

Karat red gold was becoming a very prevailing jewelry material for its special color. Copper was applied as the main alloying element, while Cu atom was prone to form fragile ordered solid solution with Au atom, which caused brittle rupture problem during the manufacturing of karat red gold jewelry. There were several factors affecting the ordered transformation, such as alloy composition, cooling method and deformation process, etc. By designing the composition of karat red material reasonably, and cooling the jewelry rapidly after heating at high temperature, and adopting correct heat-treatment process during the deformation, the brittle rupture problem could be avoided.