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Review of Size Effects during Micropillar Compression Test: Experiments and Atomistic Simulations

Journal Article · · Crystals
DOI:https://doi.org/10.3390/cryst9110591· OSTI ID:1801848
 [1];  [2];  [3];  [4];  [5]
  1. Tarbiat Modares Univ., Tehran (Iran). Faculty of Civil and Environmental Engineering; OSTI
  2. Louisiana State Univ., Baton Rouge, LA (United States). Computational Solid Mechanics Lab. Dept. of Civil and Environmental Engineering
  3. K. N. Toosi Univ. of Technology, Tehran (Iran). Dept. of Mechanical Engineering
  4. Univ. of Illinois, Chicago, IL (United States). Chemical Engineering Dept.
  5. Univ. of Michigan, Ann Arbor, MI (United States). Materials Science and Engineering

The micropillar compression test is a novel experiment to study the mechanical properties of materials at small length scales of micro and nano. The results of the micropillar compression experiments show that the strength of the material depends on the pillar diameter, which is commonly termed as size effects. In the current work, first, the experimental observations and theoretical models of size effects during micropillar compression tests are reviewed in the case of crystalline metals. In the next step, the recent computer simulations using molecular dynamics are reviewed as a powerful tool to investigate the micropillar compression experiment and its governing mechanisms of size effects.

Research Organization:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0008637
OSTI ID:
1801848
Journal Information:
Crystals, Journal Name: Crystals Journal Issue: 11 Vol. 9; ISSN 2073-4352
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

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Dislocation Reaction Mechanism for Enhanced Strain Hardening in Crystal Nano-Indentations journal December 2019

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