Acta Metall Sin  1988, Vol. 24 Issue (1): 41-46    DOI:

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EFFECT OF MICROSTRUCTURES ON THE YIELD STRENGTH AND SCR OF 7075 ALUMINIUM ALLOY

HUA Mingjian Institute of Aeronoutical Materials;Beijing;Post Box NO.81;LI Chunzhi;WANG Hongjian Institute of Aeronautical Materials; Beijing

HUA Mingjian Institute of Aeronoutical Materials;Beijing;Post Box NO.81;LI Chunzhi;WANG Hongjian Institute of Aeronautical Materials; Beijing. EFFECT OF MICROSTRUCTURES ON THE YIELD STRENGTH AND SCR OF 7075 ALUMINIUM ALLOY. Acta Metall Sin, 1988, 24(1): 41-46.

Abstract References Related Articles Recommended Metrics Download:  PDF(2076KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The microstructures of T6, CgS3 and T73 aged 7075 aluminiumalloy have been investigated using TEM and related to the yield strength and thestress-corrosion resistance (SCR) of the alloy, which were shown to be affectedmainly by the type, size and density of matrix precipitates (MPt). After aged bythe newlydeveloped CgS3 process, the majority of MPt is η' transition phase withabout 5×10~(16)/cm~3 in volume density and 5-7nm in size. The alloy subsequentlyshows an optimum combination of yield strength and SCR, which has been attributed to the increased tendency of dislocations by-passing MPt particles. Key words:  Al-Zn-Mg-Cu aluminum alloy      yield strength      stress corrosion      micro structures      Received:  18 January 1988      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1988/V24/I1/41 1 李春志.金属学报,1985;21:B233 2 Allen S M. Phil. Mag., 1981; 43: 325 3 Adler P, DeIasi R, Geschwind G. AD732321． Nov. 1971 4 Speidel M O. In: Scully J C ed. The Theory of SCC in Alloys, Erussel: NATC Sci, Affairs Division. 1971: 289 5 Hirsch P B, Humphreys F J. Physics of Strength and Plasticity. MIT Press, 1969: 189 6 Gerold V, Haberkorn V. Phys. Status Solidi, 1960; 16: 675 7 Park J K, Ardell A J. Metall Trans, 1983; 14A: 1957 8 Hua Mingjian, Li Chunzhi, Yan Minggao. In: the Secretariate of BCEIA ed. Froc. of Beijing Conf. and Exhibition on Instrumental Analysis, Beijing, Nov. 1985: Vol. 1, 102r [1] HAN En-Hou, WANG Jianqiu. Effect of Surface State on Corrosion and Stress Corrosion for Nuclear Materials[J]. 金属学报, 2023, 59(4): 513-522. [2] CHANG Litao. Corrosion and Stress Corrosion Crack Initiation in the Machined Surfaces of Austenitic Stainless Steels in Pressurized Water Reactor Primary Water： Research Progress and Perspective[J]. 金属学报, 2023, 59(2): 191-204. [3] MA Zhimin, DENG Yunlai, LIU Jia, LIU Shengdan, LIU Honglei. Effect of Quenching Rate on Stress Corrosion Cracking Susceptibility of 7136 Aluminum Alloy[J]. 金属学报, 2022, 58(9): 1118-1128. [4] SHEN Guohui, HU Bin, YANG Zhanbing, LUO Haiwen. Influence of Tempering Temperature on Mechanical Properties and Microstructures of High-Al-Contained Medium Mn Steel Having δ-Ferrite[J]. 金属学报, 2022, 58(2): 165-174. [5] LIU Zhenbao,LIANG Jianxiong,SU Jie,WANG Xiaohui,SUN Yongqing,WANG Changjun,YANG Zhiyong. Research and Application Progress in Ultra-HighStrength Stainless Steel[J]. 金属学报, 2020, 56(4): 549-557. [6] Hongchi MA, Cuiwei DU, Zhiyong LIU, Yong LI, Xiaogang LI. Comparative Study of Stress Corrosion Cracking Behaviors of Typical Microstructures of Weld Heat-Affected Zones of E690 High-Strength Low-Alloy Steel in SO2-Containing Marine Environment[J]. 金属学报, 2019, 55(4): 469-479. [7] Ping DENG,Chen SUN,Qunjia PENG,En-Hou HAN,Wei KE,Zhijie JIAO. Study on Irradiation Assisted Stress Corrosion Cracking of Nuclear Grade 304 Stainless Steel[J]. 金属学报, 2019, 55(3): 349-361. [8] ZHANG Conghui, RONG Hua, SONG Guodong, HU Kun. Effect of Surface Roughness by Shot Peening on Stress Corrosion Cracking Behavior of Pure Titanium Welded Joints in HCl Solution[J]. 金属学报, 2019, 55(10): 1282-1290. [9] Jun YU, Deping ZHANG, Ruosheng PAN, Zehua DONG. Electrochemical Noise of Stress Corrosion Cracking of P110 Tubing Steel in Sulphur-Containing Downhole Annular Fluid[J]. 金属学报, 2018, 54(10): 1399-1407. [10] Hongzhong YUAN,Zhiyong LIU,Xiaogang LI,Cuiwei DU. Influence of Applied Potential on the Stress Corrosion Behavior of X90 Pipeline Steel and Its Weld Joint in Simulated Solution of Near Neutral Soil Environment[J]. 金属学报, 2017, 53(7): 797-807. [11] Shu GUO,En-Hou HAN,Haitao WANG,Zhiming ZHANG,Jianqiu WANG. Life Prediction for Stress Corrosion Behavior of 316L Stainless Steel Elbow of Nuclear Power Plant[J]. 金属学报, 2017, 53(4): 455-464. [12] Hongliang MING,Zhiming ZHANG,Jianqiu WANG,En-Hou HAN,Mingxing SU. Microstructure and Local Properties of a Domestic Safe-End Dissimilar Metal Weld Joint by Using Hot-Wire GTAW[J]. 金属学报, 2017, 53(1): 57-69. [13] Maocheng YAN,Shuang YANG,Jin XU,Cheng SUN,Tangqing WU,Changkun YU,Wei KE. STRESS CORROSION CRACKING OF X80 PIPELINE STEEL AT COATING DEFECT IN ACIDIC SOIL[J]. 金属学报, 2016, 52(9): 1133-1141. [14] Rui XIE,Zheng LU,Chenyang LU,Zhengyuan LI,Xueyong DING,Chunming LIU. CHARACTERIZATION OF NANOSIZED PRECIPITATES IN 9Cr-ODS STEELS BY SAXS AND TEM[J]. 金属学报, 2016, 52(9): 1053-1062. [15] Rui CHEN,Qingyan XU,Baicheng LIU. MODELLING INVESTIGATION OF PRECIPITATION KINETICS AND STRENGTHENING FOR NEEDLE/ROD-SHAPED PRECIPITATES INAl-Mg-Si ALLOYS[J]. 金属学报, 2016, 52(8): 987-999. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed