Strain Hardening of ZK60 Magnesium Alloys

被引：0
作者：
Cho, Jae-Hyung [1 ]
Kang, Suk-Bong [1 ]
Han, Sang-Ho [1 ]
机构：
[1] Korea Inst Mat Sci, Chang Won 641831, Gyeongnam, South Korea
来源：
MAGNESIUM TECHNOLOGY 2012 | 2012年
关键词：
ZK60; magnesium alloys; compression; texture and microstructure; EBSD; MG-ZN; UNIAXIAL COMPRESSION; TEXTURE DEVELOPMENT; ZIRCONIUM ALLOYS; DEFORMATION; MICROSTRUCTURE; POLYCRYSTALS; DIFFRACTION; SIMULATION; SLIP;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
ZK60(Mg-Zn-Zr) alloys possessed precipitate hardening behavior during aging, and the frequency and size of rod and disc shaped precipitates changed with aging. Strain hardening and texturing of ZK60 alloys were investigated during uniaxial warm compression. Uniaxial warm compression tests were carried out at various deformation rates and temperatures. Heat treatments of solid solution (T4) and aging (T6) affected flow stress behaviors. Aging heat treatment samples (T6) had higher yield stresses and lower strain hardening rates than solution heat-treated samples (T4). Both hardening by deformation and softening by dynamic recrystallization (DRX) at elevated temperatures were observed. Most of precipitates formed during aging contained Zn and Zr elements. Linear strain hardening behavior was examined using a visco-plastic self consistent (VPSC) model.
引用
收藏
页码：361 / 364
页数：4
相关论文
共 20 条
[1]   Plastic anisotropy and the role of non-basal slip in magnesium alloy AZ31B [J].
Agnew, SR ;
Duygulu, Ö .
INTERNATIONAL JOURNAL OF PLASTICITY, 2005, 21 (06) :1161-1193
[2]   Study of slip mechanisms in a magnesium alloy by neutron diffraction and modeling [J].
Agnew, SR ;
Tomé, CN ;
Brown, DW ;
Holden, TM ;
Vogel, SC .
SCRIPTA MATERIALIA, 2003, 48 (08) :1003-1008
[3]   An analytical constitutive law for twinning dominated flow in magnesium [J].
Barnett, MR ;
Davies, CHJ ;
Ma, X .
SCRIPTA MATERIALIA, 2005, 52 (07) :627-632
[4]   Effect of heat treatment on microstructure and mechanical properties of twin roll cast and sequential warm rolled ZK60 alloy sheets [J].
Chen, Hongmei ;
Kang, Suk Bong ;
Yu, Huashun ;
Cho, Jaehyung ;
Kim, Hyoung Wook ;
Min, Guanghui .
JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 476 (1-2) :324-328
[5]   Microstructure and mechanical properties of ZK60 alloy sheets during aging [J].
Cho, J. -H. ;
Jin, Y. M. ;
Kim, H. W. ;
Kang, S. B. .
RECRYSTALLIZATION AND GRAIN GROWTH III, PTS 1 AND 2, 2007, 558-559 :159-+
[6]   Aging Effect on Texture Evolution during Warm Rolling of ZK60 Alloys Fabricated by Twin-Roll Casting [J].
Cho, Jae-Hyung ;
Chen, Hong-Mei ;
Choi, Shi-Hoon ;
Kim, Hyoung-Wook ;
Kang, Suk-Bong .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2010, 41A (10) :2575-2583
[7]   Determination of a mean orientation in electron backscatter diffraction measurements [J].
Cho, JH ;
Rollett, AD ;
Oh, KH .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2005, 36A (12) :3427-3438
[8]   The effect of grain size distribution on the shape of flow stress curves of Mg-3Al-1Zn under uniaxial compression [J].
Choi, S. -H. ;
Kim, J. K. ;
Kim, B. J. ;
Park, Y. B. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 488 (1-2) :458-467
[9]   Simulation of deformation twins and deformation texture in an AZ31 Mg alloy under uniaxial compression [J].
Choi, S.-H. ;
Shin, E. J. ;
Seong, B. S. .
ACTA MATERIALIA, 2007, 55 (12) :4181-4192
[10]   Characterization of strengthening precipitate phases in a Mg-Zn alloy [J].
Gao, X. ;
Nie, J. F. .
SCRIPTA MATERIALIA, 2007, 56 (08) :645-648
12