Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第22卷    第10期    总第163期    2012年10月

[PDF全文下载]        

    

文章编号:1004-0609(2012)10-2855-07
新型铜/非晶复合板材的制备和弯曲性能
张  丽,杨湘杰,刘  勇

(南昌大学 江西省高性能精确成形重点实验室,南昌 330031)

摘 要: 采用挤压成形工艺制备新型纯铜/Cu40Zr44Ag8Al8非晶复合板材。通过光学显微镜(OM)、X射线衍射 (XRD)、维氏硬度(HV)和扫描电子显微镜(SEM)研究复合板材芯部非晶尺寸与硬度的分布及复合板材的界面性能;并对比纯铜板材和复合板材的三点弯曲性能。结果表明:通过挤压成形工艺可以使复合板材获得良好的界面结合,界面元素梯度分布表明界面宽度约为2.15 μm。挤压开始阶段,复合板材由单一纯铜组成;随后芯部开始出现非晶,且在距离头部12 mm处非晶尺寸达到最大,其长度和宽度分别为2.785和1.481 mm;随着挤压的继续进行,芯部的非晶尺寸逐渐减小并趋于稳定,稳定阶段长度和宽度的平均尺寸分别为2.269和0.797 mm。X射线衍射和维氏硬度结果表明,芯部非晶在复合挤压过程中没有发生晶化现象。三点弯曲试验表明,复合板材的弯曲强度比纯铜的大,其弯曲断裂强度为377.4 MPa。

 

关键字: 非晶合金;复合材料;热塑性成形;弯曲性能

Preparation and bending property of novel copper/amorphous composite plate
ZHANG Li, YANG Xiang-jie, LIU Yong

Key Laboratory of Near Net Forming of Jiangxi Province, Nanchang University, Nanchang 330031, China

Abstract:The novel pure copper/Cu40Zr44Ag8Al8 amorphous composite plate was fabricated by the extrusion process. The core and interface of composite plate were characterized by optical microscopy (OM), X-ray diffractometry (XRD), microhardness (HV) and scanning electron microscopy (SEM). The bending properties of pure copper plate and composite plate were investigated by three point bending test. The results indicate that a good bonding interface of composite plate is obtained with an interface width of about 2.15 μm through EDS analysis. The composite plate is composed of single pure copper at the start of extrusion. Then, the core begins to appear amorphous, and reaches the maximum value at the distance of about 12 mm to head of plate. The length and width are 2.785 and 1.481 mm, respectively. The dimension of BMG core reduces gradually and then becomes stable. The average size of the length and width are 2.269 and 0.797 mm, respectively. The crystallization of amorphous in the core during extrusion does not occur through the analysis of XRD and microhardness. Three point bending test show that the composite plate exhibits a larger bending flexural strength (of about 377.4 MPa) than the pure copper.

 

Key words: amorphous alloy; composite; thermoplastic forming; bending property

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com