基于准连续介质法预测薄膜材料纳米硬度和弹性模量 | |
黎军顽 ; 江五贵 ; LI Junwan ; JIANG Wugui | |
2010-06-08 ; 2010-06-08 | |
关键词 | 准连续介质法 纳米压痕 尺寸效应 纳米硬度 弹性模量 quasicontinuum method nanoindentation size effect nanohardness elastic modulus TB383.2 |
其他题名 | PREDICTIONS OF NANOHARDNESS AND ELASTIC MODULUS OF THIN FILM MATERIAL WITH THE QUASICONTINUUM METHOD |
中文摘要 | 采用准连续介质法模拟了单晶Al和单晶Cu纳米压痕实验中的初始塑性变形过程,获得了压头在不同压深下的加载和卸载曲线.在计算得到的载荷-压深曲线基础上,根据Oliver-Phart法计算了薄膜材料的接触刚度、纳米硬度和弹性模量,并与相关文献的实验结果进行了比较.研究表明,接触刚度-位移曲线呈线性关系;纳米硬度测量中存在尺寸效应,而在弹性模量测量中却不存在尺寸效应.单晶Al和单晶Cu纳米硬度和弹性模量计算值分别为(0.584±0.013)和(84.088±0.332)GPa,(0.755±0.027)和(131.833±4.449)GPa.预测值与实验结果吻合,表明使用该方法预测薄膜材料的纳米硬度和弹性模量是可行的.; Quasicontinuum method was used to simulate the initial plastic deformation of both single crystals of aluminium and copper in nanoindentation test.The corresponding loading and un- loading curves at different depths were obtained.Based on the calculated load-depth curves,the contact stiffnesses,nanohardnesses and elastic moduli for thin film materials were evaluated using the Oliver-Pharr method and were compared with experimental results in the publised literatures.The results show that the contact stiffness-displacement curves are linear,and the size effect exists in nanohardness measurement,but doesn't in elastic modulus measurement.The calculated nanohard- nesses and elastic moduli of both single crystals of aluminium and copper are(0.584�013)and (84.088�332)GPa,(0.755�027)and(131.833�449)GPa,respectively,which agree with the ex- periments indicating that the presented approach is reliable for prediction of the nanohardness and elastic modulus of thin film materials.; 国家重点基础研究发展计划资助项目G2003CB61503 |
语种 | 中文 ; 中文 |
内容类型 | 期刊论文 |
源URL | [http://hdl.handle.net/123456789/51312] ![]() |
专题 | 清华大学 |
推荐引用方式 GB/T 7714 | 黎军顽,江五贵,LI Junwan,等. 基于准连续介质法预测薄膜材料纳米硬度和弹性模量[J],2010, 2010. |
APA | 黎军顽,江五贵,LI Junwan,&JIANG Wugui.(2010).基于准连续介质法预测薄膜材料纳米硬度和弹性模量.. |
MLA | 黎军顽,et al."基于准连续介质法预测薄膜材料纳米硬度和弹性模量".(2010). |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论