具有良好室温塑性的ZrCuNiAlNb块体非晶

稀有金属材料与工程, 2010, 39(12): 2127-2131.

具有良好室温塑性的ZrCuNiAlNb块体非晶

谢盛辉 ^1, , 曾燮榕 ^2, , 胡强 ^3, , 符冬菊 ^4,

1.西北工业大学,陕西西安710072

2.深圳大学深圳市特种功能材料重点实验室,广东深圳518060

3.西北工业大学,陕西西安710072

4.西北工业大学,陕西西安710072

基金项目: 深圳市科技计划(CBX200903090012A) 深圳市特种功能材料重点实验室开放基金(T0907)

关键词：块体非晶 , 室温塑性 , 纳米晶 , 剪切带

A Novel ZrCuNiAlNb Bulk Metallic Glass with Large Plastic Strain at Room Temperature

在脆性的ZrCuNiAl块体合金中添加Nb,获得新型的zr60.59Cu15.78Ni10.73Al10.75Nb2.15非晶合金.通过XRD、DSC及HRTEM对合金的结构及热力学参数进行测定,并采用静态压缩实验研究其力学性能.结果表明:合金在XRD和DSC精度范围内呈现非晶态特征,但HRTEM结果显示其析出少量1~2 nm的纳米晶.Nb的添加还显著降低了合金的结晶激活能,有利于形变过程中纳米晶的进一步形核.纳米晶的存在增加了剪切带的形核位置,阻碍和钝化剪切带扩展,并诱发剪切带分又及新剪切带形成,提高了合金的室温塑性.该块体非晶的屈服强度为1850 MPa,平均塑性应变为11.95%,最大塑性应变达到25.37%,最小塑性应变为2.95%,并具有应变硬化现象.

参考文献

[1]	Greef A L .[J].Science,1995,267:1947.
[2]	Inoue A .[J].Acta Materialia,2000,48:279.
[3]	Wang W H;Dong C;Shek C H .[J].Materials Science and Engineering,2004,44:45.
[4]	Wendelin J Wright .Shear Band Processes in Bulk Metallic Glasses[D].Standford:Standford University,2003.
[5]	Christopher A. Schuh;Todd C. Hufnagel;Upadrasta Ramamurty .Mechanical behavior of amorphous alloys[J].Acta materialia,2007(12):4067-4109.
[6]	Georgarakis K;Aljerf M;Li Y et al.[J].Appl Phy Left,2008,93:31907.
[7]	Zhang W G;Zhang Y;Hao G J et al.[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2009,516:148.
[8]	Song S X;Bei H;Wadsworth J et al.[J].Intermetallics,2008,16:813.
[9]	Song S X;Nieh T G .[J].Intermetallics,2009,17:762.
[10]	Park E S;Kyeong J S;Kim D H .[J].Scripta Materialia,2007,57:49.
[11]	Fan C.;Inoue A.;Li CF. .Nanocrystal composites in Zr-Nb-Cu-Al metallic glasses[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,2000(1/3):28-33.
[12]	Kulm U;Mattern N;Gebert A et al.[J].Journal of Applied Physics,2005,98:54307.
[13]	Zhu ZW;Zheng SJ;Zhang HF;Ding BZ;Hu ZQ;Liaw PK;Wang YD;Ren Y .Plasticity of bulk metallic glasses improved by controlling the solidification condition[J].Journal of Materials Research,2008(4):941-948.
[14]	Fan C;Qiao DC;Wilson TW;Choo H;Liaw PK .As-cast Zr-Ni-Cu-Al-Nb bulk metallic glasses containing nanocrystalline particles with ductility[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1-2):158-165.
[15]	Pan D G;Zhang H F;Wang A M et al.[J].Applied Physics Letters,2006,89:261904.
[16]	Losera W;Das J;Gutha A et al.[J].Intermetallics,2004,12:1153.
[17]	Mondal K;Ohkubo T;Toyama T et al.[J].Acta Materialia,2008,56:5329.
[18]	孙亚娟,邢大伟,黄永江,沈军.一种新的具有室温大塑性的Zr基块体非晶合金[J].稀有金属材料与工程,2009(01):54-58.
[19]	Xie S H;Zeng X R;Qian H X .[J].J AIloy Compd,2009,480:37.
[20]	Nagendra N;Ramamurty U;Gob T T et al.[J].Acta Materialia,2000,48:2603.
[21]	Chert Q;Liu L;Chan K C .[J].Journal of Alloys and Compounds,2009,467:208.
[22]	Biraja P Kanungo;Stephen C Glade;Palakkal Asoka-Kumar et al.[J].Intermetallics,2004,12:1073.
[23]	Falk ML. .Molecular-dynamics study of ductile and brittle fracture in model noncrystalline solids[J].Physical Review.B.Condensed Matter,1999(10):7062-7070.
[24]	Wang Huan-Rong;Gao Yu-Lai;Ye Yi-Fu et al.[J].Journal of Alloys and Compounds,2003,353:200.
[25]	Chen L Y;Fu Z D;Hao X P et al.[J].Physical Review Letters,2008,100:75501.
[26]	Lee Seok-Woo;Huh Moo-Young;Erie Fleury et al.[J].Acta Materialia,2006,54:349.
[27]	Lee Seok-Woo;Lee Chang-Mytm;Aim Jae-Pyoung et al.[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2007,449-451:172.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网