J. Mater. Sci. Technol. ›› 2019, Vol. 35 ›› Issue (1): 142-150.DOI: 10.1016/j.jmst.2018.09.015
• Orginal Article • Previous Articles Next Articles
Chaoyue Zhaoa, Xianhua Chenab*(), Fusheng Panab, Jingfeng Wangab, Shangyu Gaoa, Teng Tua, Chunquan Liua, Jiahao Yaoc, Andrej Atrensd
Received:
2018-03-08
Revised:
2018-06-04
Accepted:
2018-06-20
Online:
2019-01-04
Published:
2019-01-15
Contact:
Chen Xianhua
Chaoyue Zhao, Xianhua Chen, Fusheng Pan, Jingfeng Wang, Shangyu Gao, Teng Tu, Chunquan Liu, Jiahao Yao, Andrej Atrens. Strain hardening of as-extruded Mg-xZn (x = 1, 2, 3 and 4 wt%) alloys[J]. J. Mater. Sci. Technol., 2019, 35(1): 142-150.
Alloy | Mg-1Zn | Mg-2Zn | Mg-3Zn | Mg-4Zn |
---|---|---|---|---|
Design composition | 1 | 2 | 3 | 4 |
Actual composition | 1.00 | 2.16 | 3.13 | 3.99 |
Table 1 Chemical compositions of the Mg-Zn alloys (wt%).
Alloy | Mg-1Zn | Mg-2Zn | Mg-3Zn | Mg-4Zn |
---|---|---|---|---|
Design composition | 1 | 2 | 3 | 4 |
Actual composition | 1.00 | 2.16 | 3.13 | 3.99 |
Fig. 4. IPF maps and average grain size of as-extruded Mg-Zn alloys: (a) Mg-1Zn, (b) Mg-2Zn, (c) Mg-3Zn, (d) Mg-4Zn, (e) legend of IPF map, (f) average grain size.
Fig. 6. EBSD maps of as-extruded Mg-Zn samples after tensile fracture: IPF maps of Mg-1Zn (a), Mg-2Zn (c), Mg-3Zn (e) and Mg-4Zn (g); band contrast maps of Mg-1Zn (b), Mg-2Zn (d), Mg-3Zn (f) and Mg-4Zn (h).
Alloy | σUTS (MPa) | σ0.2 (MPa) | εf (%) | εp (%) | Hc | n |
---|---|---|---|---|---|---|
Mg-1Zn | 254 | 116 | 16.2 | 14.9 | 1.17 | 0.160 |
Mg-2Zn | 258 | 109 | 16.4 | 15.2 | 1.36 | 0.164 |
Mg-3Zn | 276 | 98 | 18.5 | 17.0 | 1.81 | 0.183 |
Mg-4Zn | 297 | 89 | 20.6 | 19.1 | 2.34 | 0.203 |
Table 2 Yield strength (σ0.2), ultimate tensile strength (σUTS), elongation-to-failure (εf), uniform strain (εp), hardening capacity (Hc) and strain hardening exponent (n) of the as-extruded Mg-Zn specimens.
Alloy | σUTS (MPa) | σ0.2 (MPa) | εf (%) | εp (%) | Hc | n |
---|---|---|---|---|---|---|
Mg-1Zn | 254 | 116 | 16.2 | 14.9 | 1.17 | 0.160 |
Mg-2Zn | 258 | 109 | 16.4 | 15.2 | 1.36 | 0.164 |
Mg-3Zn | 276 | 98 | 18.5 | 17.0 | 1.81 | 0.183 |
Mg-4Zn | 297 | 89 | 20.6 | 19.1 | 2.34 | 0.203 |
Alloy | Basal <a> | Prism <a> | <c+a> Second order | τprism/τbasal | τ<c+a>/τbasal | |||
---|---|---|---|---|---|---|---|---|
ms,b | τbasal | ms,p | τprism | m<c+a> | τ<c+a> | |||
Mg-1Zn | 0.16 | 18.5 | 0.45 | 76.5 | 0.43 | 73.1 | 4.1 | 3.9 |
Mg-2Zn | 0.17 | 18.5 | 0.44 | 74.8 | 0.42 | 70.1 | 4.0 | 3.8 |
Mg-3Zn | 0.19 | 18.6 | 0.44 | 72.1 | 0.41 | 67.2 | 3.9 | 3.6 |
Mg-4Zn | 0.21 | 18.7 | 0.43 | 69.6 | 0.39 | 63.2 | 3.7 | 3.4 |
Table 3 Parameters for dislocation slip systems of the as-extruded Mg-Zn alloys.
Alloy | Basal <a> | Prism <a> | <c+a> Second order | τprism/τbasal | τ<c+a>/τbasal | |||
---|---|---|---|---|---|---|---|---|
ms,b | τbasal | ms,p | τprism | m<c+a> | τ<c+a> | |||
Mg-1Zn | 0.16 | 18.5 | 0.45 | 76.5 | 0.43 | 73.1 | 4.1 | 3.9 |
Mg-2Zn | 0.17 | 18.5 | 0.44 | 74.8 | 0.42 | 70.1 | 4.0 | 3.8 |
Mg-3Zn | 0.19 | 18.6 | 0.44 | 72.1 | 0.41 | 67.2 | 3.9 | 3.6 |
Mg-4Zn | 0.21 | 18.7 | 0.43 | 69.6 | 0.39 | 63.2 | 3.7 | 3.4 |
|
[1] | Qianqian Jin, Xiaohong Shao, Shijian Zheng, Yangtao Zhou, Bo Zhang, Xiuliang Ma. Interfacial dislocations dominated lateral growth of long-period stacking ordered phase in Mg alloys [J]. J. Mater. Sci. Technol., 2021, 61(0): 114-118. |
[2] | B.N. Du, Z.Y. Hu, L.Y. Sheng, D.K. Xu, Y.X. Qiao, B.J. Wang, J. Wang, Y.F. Zheng, T.F. Xi. Microstructural characteristics and mechanical properties of the hot extruded Mg-Zn-Y-Nd alloys [J]. J. Mater. Sci. Technol., 2021, 60(0): 44-55. |
[3] | Hao Yu, Wei Xu, Sybrand van der Zwaag. Microstructure and dislocation structure evolution during creep life of Ni-based single crystal superalloys [J]. J. Mater. Sci. Technol., 2020, 45(0): 207-214. |
[4] | Yuan Zhong, Leifeng Liu, Ji Zou, Xiaodong Li, Daqing Cui, Zhijian Shen. Oxide dispersion strengthened stainless steel 316L with superior strength and ductility by selective laser melting [J]. J. Mater. Sci. Technol., 2020, 42(0): 97-105. |
[5] | Wei Li, Martina Vittorietti, Geurt Jongbloed, Jilt Sietsma. The combined influence of grain size distribution and dislocation density on hardness of interstitial free steel [J]. J. Mater. Sci. Technol., 2020, 45(0): 35-43. |
[6] | Risheng Pei, Sandra Korte-Kerzel, Talal Al-Samman. Normal and abnormal grain growth in magnesium: Experimental observations and simulations [J]. J. Mater. Sci. Technol., 2020, 50(0): 257-270. |
[7] | Qiuyan Huang, Yang Liu, Aiyue Zhang, Haoxin Jiang, Hucheng Pan, Xiaohui Feng, Changlin Yang, Tianjiao Luo, Yingju Li, Yuansheng Yang. Age hardening responses of as-extruded Mg-2.5Sn-1.5Ca alloys with a wide range of Al concentration [J]. J. Mater. Sci. Technol., 2020, 38(0): 39-46. |
[8] | Xin Zhang, Hongwei Li, Mei Zhan, Zebang Zheng, Jia Gao, Guangda Shao. Electron force-induced dislocations annihilation and regeneration of a superalloy through electrical in-situ transmission electron microscopy observations [J]. J. Mater. Sci. Technol., 2020, 36(0): 79-83. |
[9] | Ying-Jun Gao, Qian-Qian Deng, Zhe-yuan Liu, Zong-Ji Huang, Yi-Xuan Li, Zhi-Rong Luo. Modes of grain growth and mechanism of dislocation reaction under applied biaxial strain: Atomistic and continuum modeling [J]. J. Mater. Sci. Technol., 2020, 49(0): 236-250. |
[10] | Bassem Barkia, Pascal Aubry, Paul Haghi-Ashtiani, Thierry Auger, Lionel Gosmain, Frédéric Schuster, Hicham Maskrot. On the origin of the high tensile strength and ductility of additively manufactured 316L stainless steel: Multiscale investigation [J]. J. Mater. Sci. Technol., 2020, 41(0): 209-218. |
[11] | Jing Fan, Wei Rao, Junwei Qiao, P.K. Liaw, Daniel Şopu, Daniel Kiener, Jürgen Eckert, Guozheng Kang, Yucheng Wu. Achieving work hardening by forming boundaries on the nanoscale in a Ti-based metallic glass matrix composite [J]. J. Mater. Sci. Technol., 2020, 50(0): 192-203. |
[12] | Daquan Liu, Yanxia Wang, Xue Jiang, Huijun Kang, Xiong Yang, Xiaoying Zhang, Tongmin Wang. Ultrahigh electrical conductivities and low lattice thermal conductivities of La, Dy, and Nb Co-doped SrTiO3 thermoelectric materials with complex structures [J]. J. Mater. Sci. Technol., 2020, 52(0): 172-179. |
[13] | Shuchun Zhao, Qi Zhu, Xianghai An, Hua Wei, Kexing Song, Scott X. Mao, Jiangwei Wang. In situ atomistic observation of the deformation mechanism of Au nanowires with twin-twin intersection [J]. J. Mater. Sci. Technol., 2020, 53(0): 118-125. |
[14] | C.Q. Liu, C. He, H.W. Chen, J.F. Nie. Precipitation on stacking faults in Mg-9.8wt%Sn alloy [J]. J. Mater. Sci. Technol., 2020, 45(0): 230-240. |
[15] | Zhaohui Shan, Jing Bai, Jianfeng Fan, Hongfei Wu, Hua Zhang, Qiang Zhang, Yucheng Wu, Weiguo Li, Hongbiao Dong, Bingshe Xu. Exceptional mechanical properties of AZ31 alloy wire by combination of cold drawing and EPT [J]. J. Mater. Sci. Technol., 2020, 51(0): 111-118. |
Viewed | ||||||
Full text |
|
|||||
Abstract |
|
|||||