Effect of Cu on Discontinuous Precipitation of a Symmetrical AlZn Alloy

材料科学技术（英）, 2005, 21(2): 215-218.

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

1.College of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

2.College of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

3.College of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

4.College of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

5.College of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

基金项目: We are grateful to Prof. H.Ding for discussion and proof in English This work was financially supported by the National Nat ural Science Foundation of China under No(59971015)

Effect of Cu on Discontinuous Precipitation of a Symmetrical AlZn Alloy

Keywords： Al-Zn(-Cu) alloy

The effect of Cu additions on discontinuous precipitation of AlZn alloy were studied with optical microscopy, scanning electron microscopy and X-ray diffraction. It is found that the effect of addition of 2 at. pct Cu on cellular nucleation site is not remarkable, while the effect of aging temperature on cellular nucleation site of AlZn and AlZn-2Cu alloys is fairly obvious. The cell growth rate of discontinuous precipitation of AlZn alloy is remarkably accelerated with the addition of 2 at. pct Cu. The discontinuous precipitation microstructure of AlZn alloy is not apparently affected with the addition of 2 at. pct Cu and the cellular front is still fine microstructure of spinodal decomposition. The phase constituents consist of a fcc Al-rich phase, a hcp Zn-rich phase and a CuZn4 phase. The transformation rate of discontinuous precipitation of AlZn alloy is remarkably accelerated with the addition of 2 at. pct Cu.

参考文献

[1]	WJKim;JKPark .[J].ACTA METALLURGICA ET MATERIALIA,1993,41(02):441.
[2]	CPJu;RAFournellle .[J].Acta Materialia,1985,33(01):71.
[3]	MVijayalakshmi;VSeetharaman;VSRaghunathan .[J].ACTA MATERIALIA,1982,30:1147.
[4]	CFYang;GSarkar;RAFournelle .[J].Acta Materialia,1988,36(06):1511.
[5]	UmeshKMalhotra;Karl BRundman .[J].Metallurgical and Materials Transactions,1972,3(06):1521.
[6]	SAdou;GSolorzano;MEl-B;WGust BPredel .[J].Scripta Materialia,1996,34(09):1431.
[7]	IGSolorzano;GR Purdy;GCWeatherly .[J].Acta Materialia,1984,32(10):1709.
[8]	HGYi;JKPark .[J].Scripta Metallurgica et Materialia,1991,25(08):1799.
[9]	EPutler;VRamaswamy;PRSwann .[J].Acta Materialia,1973,21(04):517.
[10]	KNMelton;JWEdington .[J].Acta Materialia,1974,22:1457.
[11]	WLachom;CYZahra;AMZahra .[J].Scripta Metallurgica et Materialia,1989,23(12):2001.
[12]	PGoswell;GAChadwick .[J].Acta Materialia,1977,25:779.
[13]	APawlowski;WTruszkowski .[J].ACTA MATERIALIA,1982,30:37.
[14]	MVijayalakshmi;VSeetharaman;VSRaghunathan .[J].Materials Science and Engineering,1982,52:249.
[15]	KTashiro;GRPurdy .[J].Metallurgical and Materials Transactions,1989,20(09):1593.
[16]	EHornogen .[J].Metallurgical and Materials Transactions,1972,3(10):2717.
[17]	DHamana;ZBoumerzoug;MFatmi;SChekroud .[J].Materials Chemistry and Physics,1998,53(06):208.
[18]	HXLi;DPWang;GZhao;SMHao .[D].J Northeastern Unibersity,1999.
[19]	DAPorter;KEEasterling.Phase Transformation in Metals Alloys Van Nostr[M].Reinhold Co Ltd New York,1981:290.
[20]	HLiang;YAChang .[J].Journal of Phase Equilibria,1998,19(01):25.

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 Cu on Discontinuous Precipitation of a Symmetrical AlZn Alloy

参考文献