Influence of heat treatment on fatigue behaviour of high-strength Mg-10Gd-3Y alloy

被引：68
作者：
Dong, J. [1 ]
Liu, W. C. [1 ,2 ]
Song, X. [2 ]
Zhang, P. [3 ]
Ding, W. J. [1 ,4 ]
Korsunsky, A. M. [2 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai 200240, Peoples R China
[2] Univ Oxford, Dept Engn Sci, Oxford OX1 3PJ, England
[3] Brandenburg Tech Univ Cottbus, D-03046 Cottbus, Germany
[4] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Key State Lab Met Matrix Composite, Shanghai 200240, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 527卷 / 21-22期
基金：
中国国家自然科学基金;
关键词：
Heat treatment; High cycle fatigue; Magnesium alloy; Mg-10Gd-3Y; HIGH-CYCLE FATIGUE; Y-ZR ALLOYS; AZ31 MAGNESIUM ALLOY; MECHANICAL-PROPERTIES; AGING CHARACTERISTICS; ZN ADDITIONS; CRACK-GROWTH; MICROSTRUCTURE; AL;
D O I：
10.1016/j.msea.2010.06.030
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The current work investigated the influence of heat treatment (T4, T5 and T6) on high cycle fatigue (HCF) behaviour of the as-extruded Mg-10Gd-3Y (GW103, wt.%) alloy. The five heat treatment conditions applied to the as-extruded GW103 alloy were under-aging (T5, 225 degrees C x 4 h), peak-aging (T5, 225 degrees C x 10 h), over-aging (T5, 225 degrees C x 250 h), solution treatment (T4, 500 degrees C x 4 h), solution treatment plus artificial aging (T6, 500 degrees C x 4 h + 225 degrees C x 10 h), respectively. The results showed that T5 heat treatment can improve the fatigue behaviour of the GW103 alloy, while T4 and T6 heat treatments are detrimental to the fatigue behaviour of the GW103 alloy. The 10(7) cycles fatigue strength of the GW103 alloy made by peak-aging was improved by approximately 10%, compared with the as-extruded. While, the fatigue strength of the under-aged and over-aged GW103 alloys have no obvious difference, although fatigue life of the under-aged GW103 alloy is slightly higher than that of the over-aged GW103 alloy at high stress amplitude. The extruded-T4 and extruded-T6 GW103 alloys exhibit similar fatigue strengths of 110 MPa. The influence mechanism of heat treatment on HCP behaviour of the as-extruded GW103 alloy was discussed. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：6053 / 6063
页数：11
相关论文
共 29 条
[1]   Aging characteristics and high temperature tensile properties of Mg-Gd-Y-Zr alloys [J].
Anyanwu, IA ;
Kamado, S ;
Kojima, Y .
MATERIALS TRANSACTIONS, 2001, 42 (07) :1206-1211
[2]   Creep properties of Mg-Gd-Y-Zr alloys [J].
Anyanwu, IA ;
Kamado, S ;
Kojima, Y .
MATERIALS TRANSACTIONS, 2001, 42 (07) :1212-1218
[3]   Solid solution hardening - a comparison of two models [J].
Chandrasekaran, D .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 309 (309-310) :184-189
[4]   Effect of aging treatments on the kinetics of fatigue crack growth in 7010 aluminum alloy [J].
Desmukh, Mohammed Noor ;
Pandey, R. K. ;
Mukhopadhyay, A. K. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 435 (318-326) :318-326
[5]   Study of the mechanical properties of Mg-7.7at.% Al by in-situ neutron diffraction [J].
Gharghouri, MA ;
Weatherly, GC ;
Embury, JD ;
Root, J .
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1999, 79 (07) :1671-1695
[6]   Microstructure and strengthening mechanism of high strength Mg-10Gd-2Y-0.5Zr alloy [J].
He, S. M. ;
Zeng, X. Q. ;
Peng, L. M. ;
Gao, X. ;
Nie, J. F. ;
Ding, W. J. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 427 (1-2) :316-323
[7]   Precipitation in a Mg-10Gd-3Y-0.4Zr (wt.%) alloy during isothermal ageing at 250°C [J].
He, S. M. ;
Zeng, X. Q. ;
Peng, L. M. ;
Gao, X. ;
Nie, J. F. ;
Ding, W. J. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2006, 421 (1-2) :309-313
[8]   Effect of Zn additions on the age-hardening of Mg-2.0Gd-1.2Y-0.2Zr alloys [J].
Honma, T. ;
Ohkubo, T. ;
Kamado, S. ;
Hono, K. .
ACTA MATERIALIA, 2007, 55 (12) :4137-4150
[9]  
Honma T, 2005, MAT SCI ENG A-STRUCT, V395, P301, DOI 10.1016/j.msea.2004.12.035
[10]   High cycle fatigue of a die cast AZ91E-T4 magnesium alloy [J].
Horstemeyer, MF ;
Yang, N ;
Gall, K ;
McDowell, DL ;
Fan, J ;
Gullett, PM .
ACTA MATERIALIA, 2004, 52 (05) :1327-1336
123