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Retrogression and re-aging treatment of Al-9.99%Zn-1.72%Cu-2.5%Mg-0.13%Zr aluminum alloy FENG Chun(冯 春)1, LIU Zhi-yi(刘志义)1, NING Ai-lin(宁爱林)1,2, LIU Yan-bin(刘延斌)1, ZENG Su-min(曾苏民)1 1. School... September 2005; accepted 6 January 2006 Abstract: The effect of retrogression and re-aging(RRA) heat treatment on the microstructure and mechanical properties of a low frequency electromagnetic casting......
Retrogression characteristics of a novel Al-Cu-Li-X alloyZhi-shan Yuan1,2), Zheng Lu2), Xiu-liang Wu2), You-hua Xie2), Sheng-long Dai2), and Chang-sheng Liu3) 1) Grikin Advanced Materials Co. Ltd... University, Shenyang 110004, China摘 要:Retrogression characteristics of a novel Al-Cu-Li-X alloy of 2A97 were studied by hardness testing, transmission electron......
规回归再时效处理的提高约50%. 关键词:7055铝合金;中厚板;非等温回归;再时效;均匀性 中图分类号:TG146.2 文献标志码:A Effect of non-isothermal retrogression and re-ageing on through-thickness homogeneity of microstructure... to properties and homogeneity, the "non-isothermal retrogression and re-ageing" temper based on the air cooling treatment to through-thickness homogeneity was established as (105 ℃, 24 h)+(190 ℃, 70 min......
heating rate significantly affects the microstructures and mechanical properties of the alloys treated by retrogression and re-aging (RRA) process, and it is found that the medium rate (57 ℃/min) leads... and discontinuous η phases. Key words: aluminum alloy 7050; retrogression and re-aging treatment; microstructure; mechanical propertie 1 Introduction 7000-series high strength aluminum......
Redistribution and re-precipitation of solute atom during retrogression and reaging of Al-Zn-Mg-Cu alloys NING Ai-lin(宁爱林)1, 2, LIU Zhi-yi(刘志义)1, PENG Bei-shan(彭北山)2, ZENG Su-min(曾苏民)1 1. School...; Abstract: The redistribution and re-precipitation of solute atom during retrogression and reaging of three different Al-Zn-Mg-Cu aluminum alloys were investigated. The results of hardness......
文献标志码:A 文章编号:1672-7207(2010)05-1782-09 Re-ageing behavior of Al-Cu alloy after re-dissolution...: Supersaturated solid solution was formed after re-dissolution of precipitated phases during multi-axial compression in aged Al-Cu alloy. The re-ageing behavior of strain-induced supersaturated solid solution......
740-750 MPa after the RRA heat treatment of 120 ℃×4 h pre-ageing+retrogressed for 30 min+120 ℃×24 h re-ageing. The intracrystalline microstructure is similar to that of T6 temper and the grain boundary...):14-18.GU Jing-cheng. The Ageing Process of Aluminum Alloys[J]. Machining Technology of Light Metal, 1985(4):14-18.[11]KANNO M. Precipitation Behavior of 7000 Alloys during Retrogression and Reaging......
, 528(10): 3714- 3721. [7] MARLAUD T, DESCHAMPS A, BLEY F, LEFEBVRE W, BAROUX B. Evolution of precipitate microstructures during the retrogression and re-ageing heat treatment of an Al-Zn-Mg-Cu alloy [J...后下降至一谷值再增大.回归态合金的断裂韧性大于对应再时效态合金的断裂韧性.随着回归时间的延长,合金的断裂模式由沿晶断裂向穿晶韧窝断裂过渡. 关键词:7050铝合金;回归再时效;拉伸性能;断裂韧性 中图分类号:TG146.1 文献标志码:A1 Effects of retrogression and reaging on strength......
. Evolution of precipitate microstructures during the retrogression and re-ageing heat treatment of an Al-Zn-Mg-Cu alloy [J]. Acta Materialia, 2010, 58: 4814-4826. [23] DANH N C, RAJAN K, WALLACE W... coherent (GP zones) and semi coherent η′ phase. Also, at the beginning of retrogression (until first 10 min), a re-increase of hardness can be observed. The reason for that is the forming of new nucleated......