Effects of Sample Tilt on Vickers Indentation Hardness

2017 ◽  
pp. 271-283 ◽  
Author(s):  
Ming Liu ◽  
Guangyu Zhu ◽  
Xiangyu Dong ◽  
Jinming Liao ◽  
Chenghui Gao
Keyword(s):  
Indentation Hardness ◽  
Vickers Indentation

Further analysis of the size effect in indentation hardness tests of some metals

1995 ◽  
Vol 10 (11) ◽  
pp. 2908-2915 ◽  
Author(s):  
M. Atkinson
Keyword(s):  
Size Effect ◽  
Strain Hardening ◽  
Indentation Size Effect ◽  
Plastic Hinge ◽  
Small Scale ◽  
Indentation Hardness ◽  
Vickers Indentation ◽  
Indentation Size ◽  
Hardness Tests ◽  
Indentation Tests

The variation of apparent hardness observed in previously reported Vickers indentation tests of metals is reexamined. Common deseriptions of the effect are shown to be inaccurate: the variation of apparent hardness is monotonic but not simple. The effect is consistent with varying size of a previously postulated “plastic hinge” at the perimeter of the indent. This complexity confers uncertainty on the estimation of characteristic macrohardness from small scale tests. Association of the indentation size effect with friction and with strain hardening is confirmed.

Vickers indentation hardness of Hg1−xCdxTe

1989 ◽  
Vol 24 (5) ◽  
pp. 557-565 ◽  
Author(s):  
A. Fissel ◽  
M. Schenk ◽  
A. Engel
Keyword(s):  
Indentation Hardness ◽  
Vickers Indentation

Hardness of bulk single-crystal GaN and AlN

2002 ◽  
Vol 7 ◽  
Author(s):  
Ichiro Yonenaga
Keyword(s):  
Single Crystal ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
Mechanical Stability ◽  
Indentation Hardness ◽  
Bulk Single Crystal ◽  
Vickers Indentation ◽  
Indentation Method ◽  
Nano Indentation ◽  
High Mechanical Stability

The hardness of single-crystal GaN and AlN of 0.5-mm-thickness was measured by the Vickers indentation method in the temperature range 20 - 1400°C. The hardness of GaN and AlN is 10.2 and 17.7 GPa, respectively, at room temperature. The nano-indentation hardness of single-crystal AlN was measured at room temperature as 18 GPa, harder than GaN and InN. Up to about 1100°C, GaN and AlN maintain its hardness similar to that of SiC and thus, a high mechanical stability for GaN and AlN at elevated temperatures is deduced. Yield strength of nitrides is discussed.

Algorithm for automatic detection and measurement of Vickers indentation hardness using image processing

2020 ◽  
Vol 32 (1) ◽  
pp. 015407
Author(s):  
S M Domínguez-Nicolas ◽  
A L Herrera-May ◽  
L García-González ◽  
L Zamora-Peredo ◽  
J Hernández-Torres ◽  
...  
Keyword(s):  
Image Processing ◽  
Automatic Detection ◽  
Indentation Hardness ◽  
Vickers Indentation
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