铜基块体非晶合金硬度及弹性模量纳米压痕研究（英文）  

Hardness and Modulus of Cu-based Bulk Metallic Glasses via Nanoindentation

作　　者：皮锦红[1] 王章忠[1] 贺显聪[1] 白允强[1] 

机构地区：[1]南京工程学院江苏省先进结构材料与应用技术重点实验室,江苏南京211167

出　　处：《稀有金属材料与工程》2018年第2期479-484,共6页Rare Metal Materials and Engineering

基　　金：Open Fund of Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology(ASMA201418);Innovation Fund(CKJA201301);Dr.Special Found(ZKJ201403)of Nanjing Institute of Technology

摘　　要：分别采用加载速率控制、载荷控制和循环加载3种不同的纳米压痕模式研究了2种铜基大块金属玻璃Cu__(59)Zr_(36)Ti_5和Cu_(61)Zr_(34)Ti_5的硬度和弹性模量。当加载速率不超过5 mN/s时,试样的杨氏模量随加载速率而变化。Cu__(59)Zr_(36)Ti_5和Cu_(61)Zr_(34)Ti_5的弹性模量均随峰值载荷和加载速率的增加而降低。但峰值载荷和加载速率对硬度影响不大。循环加载使Cu__(59)Zr_(36)Ti_5产生轻微加工硬化,而Cu_(61)Zr_(34)Ti_5则不显示这样的结果。而且,Cu_(61)Zr_(34)Ti_5的硬度和模量都明显高于Cu__(59)Zr_(36)Ti_5。The hardness and Young＇modulus for two Cu-based bulk metallic glasses, Cu59Zr36Ti5 and Cu61Zr34Ti5, has been studied by nanoindentation in three different ways, including load rate control mode, load control mode, and cycles load control mode. Young＇s modulus of the specimen shows the dependence on loading rate when the loading rate is no more than 5 mN/s. The Young＇s modulus of both Cu59Zr36Ti5 and Cu61Zr34Ti5 decreases with the increasing of holding load and loading rate. But neither loading rate nor holding load has significant influence on hardness. Cyclic loading leads to slight hardening for Cu59Zr36Ti5, while Cu61Zr34Ti5 doesn＇t show such results. What＇s more, Cu61Zr34Ti5 exhibits obviously higher hardness and modulus than Cu59Zr36Ti5.

关 键 词：纳米压痕 铜基非晶 循环加载 加工硬化 

分 类 号：TG139.8[一般工业技术—材料科学与工程]