不同晶体取向锗单晶的压痕尺寸效应(英文)
发布时间:2022-08-07 19:59
为了研究锗单晶的压痕尺寸效应,对(100)、(110)和(111)晶面取向的锗单晶进行纳米压痕实验。基于Meyer方程、比例试样阻力(PSR)模型和Nix-Gao模型计算锗单晶各晶面无压痕尺寸效应时的真实硬度值,并基于Manika幂律关系计算锗单晶各晶面的尺寸效应因子。结果表明:锗单晶在加载过程中发生弹性变形、塑性变形和脆性断裂3个阶段,且3个晶面均表现出明显的尺寸效应现象。3种模型均能较好地描述锗单晶的尺寸效应,其中Nix-Gao模型的计算值最为准确。相比于其他两个晶面,Ge (110)的尺寸效应因子m值最高,且具有最高的硬度值,表明该晶面的塑性性能最差。
【文章页数】:10 页
【文章目录】:
1 Introduction
2 Experimental
3 Results and discussion
3.1 Mechanical parameters of material
3.2 Mechanical property curves and surface topography
3.3 ISE of germanium single crystal
3.3.1 Meyer equation
3.3.2 Proportional specimen resistance(PSR)model The PSR model assumes that during the
3.3.3 Nix-Gao model
4 Conclusions
本文编号:3670950
【文章页数】:10 页
【文章目录】:
1 Introduction
2 Experimental
3 Results and discussion
3.1 Mechanical parameters of material
3.2 Mechanical property curves and surface topography
3.3 ISE of germanium single crystal
3.3.1 Meyer equation
3.3.2 Proportional specimen resistance(PSR)model The PSR model assumes that during the
3.3.3 Nix-Gao model
4 Conclusions
本文编号:3670950
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