有色金属材料与工程2026，Vol.47Issue(2)：27-33,7.DOI:10.13258/j.cnki.nmme.20250606001
基于压铸锌合金锭生产的晶粒细化方式研究
Grain refinement techniques for die-cast zinc alloy ingot production
摘要
Abstract
This paper systematically investigates the effects of cooling rate control,ultrasonic treatment during solidification,and the addition of self-inoculants before pouring on grain refinement in the production process of die-cast zinc alloy ingots.The results demonstrate that:(1)Maintaining a solidification cooling rate of approximately 1.0℃/s at a pouring temperature of～500℃effectively refines primary η-phase grains while avoiding the formation of a petal-like morphology caused by excessively high cooling rates.(2)Applying longitudinal ultrasonic waves at 20 kHz during solidification significantly refines primary η-phase grains(resulting in a fine equiaxed morphology),promotes the formation of a regular lamellar structure in the eutectic phase,substantially enhances the overall microstructural homogeneity of the ingot,and alleviates compositional segregation induced by solidification sequence variations.(3)Adding an appropriate amount(0.5%-1.0%)of the same grade zinc alloy as a self-inoculant prior to pouring markedly increases the nucleation rate,achieving further grain refinement without introducing heterogeneous particles.This study provides a feasible technological pathway for optimizing grain refinement in the industrial production of die-cast zinc alloy ingots.关键词
压铸锌合金/晶粒细化/生产优化/冷却速率/超声凝固/自孕育剂Key words
die-cast zinc alloy/grain refinement/production optimization/cooling rate/ultrasonic solidification processing/self-inoculant分类
矿业与冶金引用本文复制引用
陈海大,汪九初,王俊杰..基于压铸锌合金锭生产的晶粒细化方式研究[J].有色金属材料与工程,2026,47(2):27-33,7.基金项目
安徽省池州市科技专项项目czkj202310013 （）
铜陵有色金属集团控股有限公司科技计划项目R&D202302003 （）
