SUPERPLASTIC DEFORMATION BEHAVIOR OF SUPERHARD Al ALLOY LC4

Abstract

Abstract: The superplasticity of high strength superhard A1 alloy LC4 was improved to a great extent by modified thermomechanical treatment.Its maximum elongation may be up to 2100% un- der deformation at initial strain rate of 8.33×10~(-4) S~(-1) at 510℃.Observations of the microstructure changes revealed that with the increase of the deformation,the grain grows and the alloy exhibits strain hardening.The excellent elongation of the alloy seems due to the in- crease of grain stability under deformation.

Key words: superplasticity, thermomechanical treatment, artificial aging, superhard Al alloy

JIANG Xinggang WU Qingling CUI Jianzhong MA Longxiang Northeast University of Technology,Shenyang,China. SUPERPLASTIC DEFORMATION BEHAVIOR OF SUPERHARD Al ALLOY LC4[J]. Acta Metallurgica Sinica (English Letters), 1991, 4(7): 70-73.

[1]	Wen Wang, Peng Han, Pai Peng, Ting Zhang, Qiang Liu, Sheng-Nan Yuan, Li-Ying Huang, Hai-Liang Yu, Ke Qiao, Kuai-She Wang. Friction Stir Processing of Magnesium Alloys: A Review [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(1): 43-57.
[2]	Tian-Long Zhang, Toko Tokunaga, Munekazu Ohno, Mi-Lin Zhang, Kiyotaka Matsuura. Fabrication of Al-Coated Mg-Li Alloy Sheet and Investigation of Its Properties [J]. Acta Metallurgica Sinica (English Letters), 2019, 32(2): 169-177.
[3]	Gang Wang, Zbigniew H. Stachurski. A Concordant Shift Model for Flow in Bulk Metallic Glasses [J]. Acta Metallurgica Sinica (English Letters), 2016, 29(2): 134-139.
[4]	Lin Geng, Lujun Huang. High Temperature Properties of Discontinuously Reinforced Titanium Matrix Composites: A Review [J]. Acta Metallurgica Sinica (English Letters), 2014, 27(5): 787-797.
[5]	Qian CONG, Fumin XU,Yi TAN, Xiaolei SHI, Wei DONG, Jiayan LI, Junshan ZHANG. Influence of heat treatment on microstructure and mechanical properties of Al/Al-Cu graded materials [J]. Acta Metallurgica Sinica (English Letters), 2011, 24(2): 118-124.
[6]	H. Jafari,M.H. Idris,A.Ourdjini,G. Payganeh. Effect of thermomechanical treatment on microstructure and hardness behavior of AZ63 magnesium alloy [J]. Acta Metallurgica Sinica (English Letters), 2009, 22(6): 401-407.
[7]	W.B. Han, K.F. Zhang, B. Wang, D.Z. Wu. Superplasticity and Diffusion Bonding of IN718 Superalloy [J]. Acta Metallurgica Sinica (English Letters), 2007, 20(4): 307-312 .
[8]	F.Yan, K.Wu, M.Zhao. SUPERPLASTICITY IN SiCw／ZK60 COMPOSITE [J]. Acta Metallurgica Sinica (English Letters), 2003, 16(3): 217-220 .
[9]	X.J. Xu, W. Wang, L. Cai. SUPERPLASTICITY OF A SiCw/2024 Al COMPOSITE MADE BY PRESSURE INFILTRATION [J]. Acta Metallurgica Sinica (English Letters), 2002, 15(5): 425-430 .
[10]	L.H. Han, J.T. Niu, D.M. Jiang. HIGH STRAIN RATE SUPERPLASTICITY OF A AIN PARTICULATE REINFORCED 6061Al COMPOSITE [J]. Acta Metallurgica Sinica (English Letters), 2001, 14(2): 127-131 .
[11]	M. B. Liu, Z. C. Zhao,H. Gao,M. Q. Li and S. C. Wu College of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China. THE INFLUENCE OF CAVITY DAMAGE ON MECHANICAL PROPERTIES OF SUPERPLASTICALLY-DEFORMED MATERIALS AND ITS PREDICTION [J]. Acta Metallurgica Sinica (English Letters), 2000, 13(2): 481-485.
[12]	R. Ya. Lutfullin, O.A. Kaibyshev, R.V. Safiullin, O.R. Valiakhmetov and M.H. Mukhametrahimov Institute for Metals Superplasticity Problems, Russian Academy of Sciences, Ufa 450001, Russia. SUPERPLASTICITY AND SOLID STATE BONDING OF TITANIUM ALLOYS [J]. Acta Metallurgica Sinica (English Letters), 2000, 13(2): 561-566.
[13]	R. V. Safiullin, R.A. Vasin and F. U. Enikeev Institute for Metals Superplasticity Problems Khalturina, 39, Ufa, 450001, Russia. DETERMINATION OF THE PARAMETERS OF SUPERPLASTIC FORMING FOR LONG RECTANGULAR THIN SHEET TITANIUM ALLOY Ti-6A1-4V [J]. Acta Metallurgica Sinica (English Letters), 2000, 13(2): 567-573.
[14]	T. Imai, L. Geng, J. F. Mao and I. Tochigi 1) National Industrial Research Institute of Nagoya, 1-1 Hirate-cho, Kita-ku, Nagoya, 462-8510, Japan 2) School of Materials Science & Engineering, Harbin Institute of Technology, Harbin 15001, China 3) Kanagawa High-Technology Foundation, Kanagawa Science Park, 3-2-1, Sakado, Takatsu-ku, Kawasaki, Kanagawa 213, Japan. HIGH STRAIN RATE SUPERPLASTICITY OF DISCONTINUOUS CERAMIC FIBER REINFORCED ALUMINUM COMPOSITES [J]. Acta Metallurgica Sinica (English Letters), 2000, 13(2): 581-586.
[15]	X. J. Sun, J. L. Gu, B. Z. Bai, B. Dai and N. P. Chen (Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China. FABRICATION OF SUBMICRON GRAINED TITANIUM ALLOY BY COMPRESSIVE DEFORMATION [J]. Acta Metallurgica Sinica (English Letters), 2000, 13(2): 638-644.

SUPERPLASTIC DEFORMATION BEHAVIOR OF SUPERHARD Al ALLOY LC4

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments