有色金属科学与工程2024，Vol.15Issue(2)：167-179,13.DOI:10.13264/j.cnki.ysjskx.2024.02.003
超重力对梯度Al-Zn-Mg-Cu合金成分和微观组织的影响
Effects of supergravity on composition and microstructure of gradient Al-Zn-Mg-Cu alloy
摘要
Abstract
A new method for the preparation of gradient Al-Zn-Mg-Cu alloy was presented in this paper.The composition content,microstructure and mechanical properties in gradient combined with the directional solidification process were obtained by optimizing the experimental parameters under conditions of hypergravity cooling centrifugation.Based on the precipitation characteristics of the alloy,the efficient separation of α-Al precipitated phase and eutectic T phase during cooling and solidification was realized by supergravity technology and temperature gradient range,in which most of the α-Al precipitated phrase was concentrated at the top of the sample,while the eutectic microstructure was mainly distributed at the bottom of it.Increasing the gravity coefficient and expanding the temperature gradient was beneficial to obtain materials with a larger gradient range,owing to the precipitated phases with different densities distributed at different positions of the sample under the supergravity.The results showed that the gradient aluminum alloys could be obtained in a short time by supergravity cooling centrifugation,thus providing new process means and ideas for the preparation of the gradient aluminum alloy materials.关键词
铝基复合材料/超重力技术/梯度铝合金Key words
aluminum matrix composites/supergravity technology/gradient aluminum alloy分类
矿业与冶金引用本文复制引用
于含樟,杜依诺,徐磊,郭占成..超重力对梯度Al-Zn-Mg-Cu合金成分和微观组织的影响[J].有色金属科学与工程,2024,15(2):167-179,13.基金项目
国家自然科学基金资助项目(52174275) （52174275）
