Effect of thermomechanical treatment on microstructure and properties of Cu-Cr-Zr-Ag alloy

稀有金属（英文版）, 2011, 30(6): 650-656. doi: 10.1007/s12598-011-0444-9

^1, , ^2, , ^3, , ^4, , ^5, , ^6,

1.State Key Laboratory of Nonferrous Metals and Processes, General Research Institute for Nonferrous Metals, Beijing 100088, China

2.State Key Laboratory of Nonferrous Metals and Processes, General Research Institute for Nonferrous Metals, Beijing 100088, China

3.State Key Laboratory of Nonferrous Metals and Processes, General Research Institute for Nonferrous Metals, Beijing 100088, China

4.State Key Laboratory of Nonferrous Metals and Processes, General Research Institute for Nonferrous Metals, Beijing 100088, China

5.State Key Laboratory of Nonferrous Metals and Processes, General Research Institute for Nonferrous Metals, Beijing 100088, China

6.State Key Laboratory of Nonferrous Metals and Processes, General Research Institute for Nonferrous Metals, Beijing 100088, China

基金项目: The authors acknowledge Mr.Hu,Mr.Liu and Mr.Zhang for the support on alloy processing the National High-Tech Research and Development Program of China(2006AA03Z522) TEM and SEM observation support from Prof.Cui and Miss Bei at Microstructure Laboratory for Energy Materials of China University of Petroleum (Beijing Campus) is also appreciated the National Natural Science Foundation of China(50704006) the Technology Development Fund of CHALCO(CHINACO-2009-KJ02)

Effect of thermomechanical treatment on microstructure and properties of Cu-Cr-Zr-Ag alloy

XIE Haofeng ^1, , MI Xujun ^2, , HUANG Guojie ^3, , GAO Baodong ^4, , YIN Xiangqian ^5, , LI Yanfeng ^6,

1.State Key Laboratory of Nonferrous Metals and Processes, General Research Institute for Nonferrous Metals, Beijing 100088, China

2.State Key Laboratory of Nonferrous Metals and Processes, General Research Institute for Nonferrous Metals, Beijing 100088, China

3.State Key Laboratory of Nonferrous Metals and Processes, General Research Institute for Nonferrous Metals, Beijing 100088, China

4.State Key Laboratory of Nonferrous Metals and Processes, General Research Institute for Nonferrous Metals, Beijing 100088, China

5.State Key Laboratory of Nonferrous Metals and Processes, General Research Institute for Nonferrous Metals, Beijing 100088, China

6.State Key Laboratory of Nonferrous Metals and Processes, General Research Institute for Nonferrous Metals, Beijing 100088, China

Keywords： Cu-Cr-Zr-Ag alloy

The effects of thermomechanical treatment on the properties and microstructure of Cu-Cr-Zr alloy and Cu-Cr-Zr-Ag alloy were investigated.Ag addition improves the mechanical properties of the alloy through solid solution strengthening and brings a little effect on the electrical conductivity of the alloy.A new Cu-Cr-Zr-Ag alloy was developed,which has an excellent combination of the tensile strength,elongation,and electrical conductivity reaching 476.09 MPa,15.43％ and 88.68％ IACS respectively when subjected to the optimum thermomechanical treatment,i.e.,solution-treating at 920℃ for 1 h,cold drawing to 96％ deformation,followed by aging at 400℃ for 3 h.TEM analysis revealed two kinds of finely dispersed precipitates of Cr and Cu4Zr.It is very important to use the mechanisms of solid solution strengthening,work hardening effect as well as precipitate pinning effect of dislocations to improve tensile strength of the alloy without adversely affecting its electrical conductivity.

参考文献

[1]	Henmi Z;Nagai T .Transmission electron microscopy of Cu-Zr-Cr Alloy[J].Materials Transactions-Japan Institute of Metals,1969,10(05):305.
[2]	Batra IS.;Kulkarni UD.;Banerjee S.;Dey GK. .Microstructure and properties of a Cu-Cr-Zr alloy[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2001(2):91-100.
[3]	HO J. RYU;HYUNG K. BAIK;SOON H. HONG .Effect of thermomechanical treatments on microstructure and properties of Cu-base leadframe alloy[J].Journal of Materials Science,2000(14):3641-3646.
[4]	Zakharov M.V;Putsikin G.G;Stepanova A.V;Vorontsova L.A .Copper-base conductor alloys with improved elevated temperature strength[J].Metal Science and Heat Treatment,1960,2(09):487.
[5]	Müller R .Arc-melted CuCr alloys as contact materials for vacuum interrupters[J].Siemens Forschungs-und Entwicklungsberichte/Siemens Research and Development Reports,1988,17(03):105.
[6]	Okamoto H .Cu-Zr (Copper-Zirconium)[J].Journal of Phase Equilibria and Diffusion,2008,29(02):24.
[7]	钟建伟,周海涛,赵仲恺,李庆波,周啸.形变热处理对Cu-Cr-Zr合金时效组织和性能的影响[J].中国有色金属学报,2008(06):1032-1038.
[8]	Zeng K.J;H(a)m(a)l(a)inen M .A theoretical study of the phase equilibria in the Cu-Cr-Zr system[J].Journal of Alloys and Compounds,1995,220(1-2):53.
[9]	Wang Z.Q;Zhong Y.B;Cao G.H;Wang C, Wang J, Ren W.L, Lei Z.S, and Ren Z.M .Influence of dc electric current on the hardness of thermally aged Cu-Cr-Zr alloy[J].Journal of Alloys and Compounds,2009,479(1-2):303.
[10]	Batra I.S;Dey G.K;Kulkami U.D;Banerjee S .Precipitation in a Cu-Cr-Zr alloy[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2003,356(1-2):32.
[11]	Wang Z.Q;Zhong Y.B;Lei Z.S;Ren W.L, Ren Z.M, and Deng K .Microstructure and electrical conductivity of Cu-Cr-Zr,alloy aged with dc electric current[J].Journal of Alloys and Compounds,2009,471(1-2):172.
[12]	Correia J.B;Davies H.A;Sellars C.M .Strengthening in rapidly solidified age hardened Cu-Cr and Cu-Cr-Zr alloys[J].Acta Materialia,1997,45(01):177.
[13]	Mu SG;Guo FA;Tang YQ;Cao XM;Tang MT .Study on microstructure and properties of aged Cu-Cr-Zr-Mg-RE alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):235-240.
[14]	Holzwarth U.;Stamm H. .The precipitation behaviour of ITER-grade Cu-Cr-Zr alloy after simulating the thermal cycle of hot isostatic pressing[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2000(1):31-45.
[15]	Morris M.A;Leboeuf M;Morris D.G .Re crystallization mechanisms in a Cu-Cr-Zr alloy with a bimodal distribution of particles[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,1994,188(1-2):255.
[16]	Tang N.Y;Taplin D.M.R;Dunlop G.L .Precipitation and aging in high-conductivity Cu-Cr alloys with additions of zirconium and magnesium[J].Materials Science and Technology,1985,1(04):270.
[17]	Y. Zhan;Y. Xu;Z. Yu .Cu-Cr-Zr alloy matrix composite prepared by powder metallurgy method[J].Powder Metallurgy,2006(3):253-257.
[18]	Y. Zhan;J. Zeng;Yongzhong Zhan;Jianmin Zeng .Fabrication and electrical sliding wear of graphitic Cu-Cr-Zr matrix composites[J].Zeitschrift fur Metallkunde,2006(2):150-155.
[19]	Kang BX;Cao XG;Huang JL;Yen B;Gu HC;Liu P .Aging precipitation and recrystallization of rapidly solidified Cu-Cr-Zr-Mg alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1999(1/2):262-267.
[20]	Li H.Q;Xie S.S;Mi X.J;Liu Y, Wu P.Y, and Cheng L .Influence of cerium and yttrium on Cu-Cr-Zr alloys[J].Journal of Rare Earths,2006,24(Suppl.1):367.
[21]	Watanabe C;Monzen R;Tazaki K .Mechanical properties of Cu-Cr system alloys with and without Zr and Ag[J].Journal of Materials Science,2008(3):813-819.
[22]	Tian S.Physical Property of Materials[M].北京:北京航空航天大学出版社,2004:45.
[23]	Balcerek K;Marucha Cz;Rafalowicz J;Wawryk R .Deviation from matthiessen's rule for thermal conductivity of quenched Zn-doped Cd crystals in the temperature range 5-20 K[J].International Journal of Theoretical Physics,1993,14(06):1229.
[24]	Zhong W.J.Copper Processing Practical Technology Manual[M].北京:冶金工业出版社,2007:82.
[25]	Wolfgang Grunberger;Martin Heilmaier;Ludwig Schultz .Microstructure and mechanical properties of Cu-Ag microcomposites for conductor wires in pulsed high-field magnets[J].Zeitschrift fur Metallkunde,2002(1):58-65.
[26]	Zhang L;Meng L;Liu J.B .Effects of Cr addition on the microstructural,mechanical and electrical characteristics of Cu-6 wt.％Ag microcomposite[J].Scripta Materialia,2005,52(07):587.
[27]	Su JH;Dong QM;Liu P;Li HJ;Kang BX .Research on aging precipitation in a Cu-Cr-Zr-Mg alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):422-426.
[28]	Gallagher P.C.J .The influence of alloying,temperature,and related effects on the stacking fault energy[J].Metallurgical and Materials Transactions,1970,1(09):2429.

上一张下一张

计量

下载量()
访问量()

作者相关

在本站搜索
在百度学术搜索
在万方数据库搜索
在CNKI搜索

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网

Effect of thermomechanical treatment on microstructure and properties of Cu-Cr-Zr-Ag alloy

参考文献