文章信息/Info

Title:

Effects of Cu Content on the microstructural evolution during ageing of 6000 and 7000 Al alloys

作者:

張凱1; 2 李凱1 2 杜勇1 2 辛婧華1; 2方旭1; 2宋旼1; 2

 1 中南大學粉末冶金國家重點實驗室，湖南長沙410083
2 中德鋁合金微結(jié)構(gòu)聯(lián)合實驗室，湖南長沙410083

Author(s):

Zhang Kai¹; 2;  Li Kai¹; 2;  Du Yong¹; 2;  Xin Jinghua¹; 2;  Fang Xu¹; 2;  Song Min¹

 ¹State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China) (²Sino-German Cooperation Group “Microstructure in Al alloys”, Central South University, Changsha 410083, China)

關(guān)鍵詞:

鋁合金; 微結(jié)構(gòu); SAED模擬; HAADF-STEM; 3DAP; Cu添加

DOI:

10.7502/j.issn.1674-3962.2014.06.02

文獻標志碼:

A

摘要:

本文介紹了研究鋁合金析出強化過程中微結(jié)構(gòu)演變的幾種先進手段，包括高角環(huán)形暗場-掃描透射電子顯微術(shù)，三維原子探針技術(shù)，選區(qū)電子衍射模擬和第一性原理計算；綜述了作者及國內(nèi)外學者使用這些手段研究Cu對6000系和7000系鋁合金時效過程中微結(jié)構(gòu)影響的新進展；最后展望了通過對鋁合金微結(jié)構(gòu)的定量模擬結(jié)合實驗驗證進行合金設計的發(fā)展方向。

Abstract:

The advantages of several advanced methods in characterizing the microstructural evolution during ageing precipitation of Al alloys, including high-angle annular dark field -scanning transmission electron microscopy, 3-dimensional atom probe, selected area electron diffraction simulation and first principle calculations, have been introduced. The progress in investigating the effects of Cu addition on the microstructural evolution during ageing precipitation of 6000 and 7000 Al alloys with these methods is briefly reviewed. The advancing of these techniques and the progress in microstructural investigations promise a bright future of alloy design by combining quantitative simulation on microstructure of Al alloys with key experimental verifications.