Mechanical Behavior of Nanometer Ni by Simulating Nanoindentation

• 作者: 丁斓 杨天勇 汤奇恒
• 来源期刊: 中国物理快报(英文版)
• 学科: 工学
• 关键词: 分子动力学 行为模拟 纳米压痕 纳米镍 点缺陷 纳米尺度 晶体取向 局部区域
• 年，卷（期）: 2010,（2）
• 页码范围: 203-205
• 页数: 3页
• 分类号: TB383 TP334.7
• 语种: 英文

摘要

An indentation simulation of the crystal Ni is carried out by a molecular dynamics technique (MD) to study the mechanical behavior at nanometer scales. Indenter tips with both sphere shape and conical shape with 60° cone angle are used, and simulation samples with different crystal orientations are adopted. Some defects such as dislocations and point defects are observed. It is found that nucleated defects (dislocations, amorphous atoms) are from the local region near the pin tip or the sample surface. The temperature distribution of the local region is analyzed and it can explain our MD simulation results.