Cu-Nb复合线材的径向织构和显微硬度的演变规律*

doi:10.11901/1005.3093.2016.049

材料研究学报

2016, Vol. 30

Issue (11): 848-854 DOI: 10.11901/1005.3093.2016.049

论文

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Cu-Nb复合线材的径向织构和显微硬度的演变规律*

邓丽萍¹(

),刘跃鸣¹,杨杰瑞¹,汪炳叔²,杨晓芳³

1. 福州大学机械工程及自动化学院福州 350108
2. 福州大学材料科学与工程学院福州 350108
3. 重庆大学材料科学与工程学院重庆 400045

Evolution of Radial Texture and Microhardness of Cu-Nb Composite Wires

Liping DENG^1,^**(

),Yueming LIU¹,Jierui YANG¹,Bingshu WANG²,Xiaofang YANG³

1. School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350108, China
2. College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China
3. College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China

引用本文:

邓丽萍, 刘跃鸣, 杨杰瑞, 汪炳叔, 杨晓芳. Cu-Nb复合线材的径向织构和显微硬度的演变规律*[J]. 材料研究学报, 2016, 30(11): 848-854.
Liping DENG, Yueming LIU, Jierui YANG, Bingshu WANG, Xiaofang YANG. Evolution of Radial Texture and Microhardness of Cu-Nb Composite Wires[J]. Chinese Journal of Materials Research, 2016, 30(11): 848-854.

全文: PDF(4125 KB) HTML

摘要:

采用扫描电子显微技术和电子背散射衍射技术研究了Cu-Nb复合线材的径向织构和显微硬度的演变规律。结果表明, 线材径向织构的分布呈现明显的梯度分布特征, Cu基体内以<111>丝织构为主, 且其含量从表层到中心层逐渐增多; Nb相内以<100>丝织构为主, 在径向上织构的含量没有显著的变化。径向显微硬度由界面密度和<111>Cu织构组分共同决定, 织构梯度特征是线材径向显微硬度变化的主要因素。

关键词 ： Cu-Nb复合材料, 织构强化, 界面密度, 显微硬度

Abstract：

The evolution of radial texture and microstructure of Cu-Nb microcomposite wires was investigated using scanning electron microscopy with electron back-scattering diffraction. Cu matrix shows a major <111> fiber texture, and the intensity of which increases from the surface to the center; Nb phase, however, shows a major <110> fiber texture without significant change in the intensity along the radial direction. The microhardness is determined by both the interface area density and <111>Cu texture. The texture hardening is the dominant influence on the change of radial microhardness.

Key words： Cu-Nb microcomposite texture hardening interface area density microhardness

收稿日期: 2016-01-12

基金资助:* 国家自然科学基金51301040和51601039, 福建省自然科学基金2016J05119, 福建省教育厅科技项目JA15072和福州大学贵重仪器设备开放测试基金2016T029资助项目

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https://www.cjmr.org/CN/10.11901/1005.3093.2016.049 或 https://www.cjmr.org/CN/Y2016/V30/I11/848

图1 SEM/EBSD测试区域示意图

图2 硬度值(HV)沿径向的变化

图3 线材横截面径向上的微观结构图(N=854)及界面密度变化情况(N=853和N=854)

图4 N=854线材不同区域内Cu基体的织构组分图

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