Temperature dependence of the indentation size effect

The influence of temperature on the indentation size effect is explored experimentally. Copper is indented on a custom-built high-temperature nanoindenter at temperatures between ambient and 200 °C, in an inert atmosphere that precludes oxidation. Over this range of temperatures, the size effect is reduced considerably, suggesting that thermal activation plays a major role in determining the length scale for plasticity.

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Temperature dependence of indentation size effect, dislocation pile-ups, and lattice friction in (001) strontium titanate

Journal of the American Ceramic Society ◽

10.1111/jace.15182 ◽

2017 ◽

Vol 101 (1) ◽

pp. 356-364 ◽

Cited By ~ 7

Author(s):

Farhan Javaid ◽

Kurt E. Johanns ◽

Eric A. Patterson ◽

Karsten Durst

Keyword(s):

Size Effect ◽

Temperature Dependence ◽

Strontium Titanate ◽

Indentation Size Effect ◽

Indentation Size ◽

Lattice Friction

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Indentation size effect and strain rate sensitivity of Ni3Ta high temperature shape memory alloy

Vacuum ◽

10.1016/j.vacuum.2018.11.017 ◽

2019 ◽

Vol 160 ◽

pp. 25-30 ◽

Cited By ~ 2

Author(s):

A.V. Shuitcev ◽

Y.X. Tong ◽

L. Li

Keyword(s):

High Temperature ◽

Shape Memory Alloy ◽

Size Effect ◽

Strain Rate ◽

Shape Memory ◽

Strain Rate Sensitivity ◽

Indentation Size Effect ◽

Rate Sensitivity ◽

Indentation Size

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The Identation Size Effect and Hall-Petch Behaviour of Annealed Polycrystalline Copper

MRS Proceedings ◽

10.1557/proc-976-0976-ee09-10 ◽

2006 ◽

Vol 976 ◽

Author(s):

XiaoDong Hou ◽

T.T. Zhu ◽

N. M. Jennett ◽

A. J. Bushby

Keyword(s):

Grain Size ◽

Size Effect ◽

Size Effects ◽

Indentation Size Effect ◽

Indentation Test ◽

Small Radius ◽

Contact Radius ◽

Length Scale ◽

Indentation Size ◽

Non Destructive

AbstractMethods to obtain tensile stress-strain properties of materials from a practically non-destructive indentation test are of great industrial interest. However, to do this successfully, indentation size effects must be accounted for. Many indentation size effects, such as strain gradient plasticity and micro-pillar experiments [1], show a size dependence proportional to the inverse square root of a length scale, in common with Hall-Petch behavior. Recently, however, the indentation size effect from small radius spherical indenters has been shown, for a range of fcc metals, not to follow a Hall-Petch-like relationship but to be proportional to the inverse cube root of indenter radius [2]. Here, we investigate these differences further and present results for the indentation size effect with spherical indenters on Cu samples that have been engineered to have different grain sizes. The important experimental control parameter of the relative size of the indentation compared to the grain size is also explored since the cross over from grains significantly smaller than the contact radius to grains significantly larger than the contact radius occurs at different length scales in each sample. A thorough understanding of the various length-scale effects in the different test methods (e.g. the indentation size effect and grain size effect in indentation), is essential if a relationship, robust enough for industrial application, is to be defined to obtain tensile properties from an essentially non-destructive indentation test.

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Investigation of the mechanism of the indentation size effect for titanium

Mechanical Engineering Journal ◽

10.1299/mej.18-00545 ◽

2019 ◽

Vol 6 (2) ◽

pp. 18-00545-18-00545

Author(s):

Shota HASUNUMA ◽

Hirohisa MIYAZAKI ◽

Takeshi OGAWA

Keyword(s):

Size Effect ◽

Indentation Size Effect ◽

Indentation Size

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Study of the interaction between the indentation size effect and Hall–Petch effect with spherical indenters on annealed polycrystalline copper

Journal of Physics D Applied Physics ◽

10.1088/0022-3727/41/7/074006 ◽

2008 ◽

Vol 41 (7) ◽

pp. 074006 ◽

Cited By ~ 52

Author(s):

X D Hou ◽

A J Bushby ◽

N M Jennett

Keyword(s):

Size Effect ◽

Indentation Size Effect ◽

Polycrystalline Copper ◽

Indentation Size

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Cracking and the Indentation Size Effect for Knoop Hardness of Glasses

Journal of the American Ceramic Society ◽

10.1111/j.1151-2916.2003.tb03319.x ◽

2003 ◽

Vol 86 (3) ◽

pp. 441-448 ◽

Cited By ~ 43

Author(s):

George D. Quinn ◽

Patrice Green ◽

Kang Xu

Keyword(s):

Size Effect ◽

Indentation Size Effect ◽

Knoop Hardness ◽

Indentation Size

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Indentation size effect of cortical bones submitted to different soft tissue removals

Journal of the Mechanical Behavior of Biomedical Materials ◽

10.1016/j.jmbbm.2013.02.011 ◽

2013 ◽

Vol 20 ◽

pp. 338-346 ◽

Cited By ~ 4

Author(s):

A. Bandini ◽

D. Chicot ◽

P. Berry ◽

X. Decoopman ◽

A. Pertuz ◽

...

Keyword(s):

Soft Tissue ◽

Size Effect ◽

Indentation Size Effect ◽

Indentation Size

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

Journal of Materials Research ◽

10.1557/jmr.1995.2908 ◽

1995 ◽

Vol 10 (11) ◽

pp. 2908-2915 ◽

Cited By ~ 72

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.

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