Strategies to Approach Stabilized Plasticity in Metals with Diminutive Volume: A Brief Review
Micrometer- or submicrometer-sized metallic pillars are widely studied by investigators worldwide, not only to provide insights into fundamental phenomena, but also to explore potential applications in microelectromechanical system (MEMS) devices. While these materials with a diminutive volume exhib...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-08-01
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| Series: | Crystals |
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| Online Access: | http://www.mdpi.com/2073-4352/6/8/92 |
| _version_ | 1818001576509308928 |
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| author | Tao Hu Lin Jiang Amiya K. Mukherjee Julie M. Schoenung Enrique J. Lavernia |
| author_facet | Tao Hu Lin Jiang Amiya K. Mukherjee Julie M. Schoenung Enrique J. Lavernia |
| author_sort | Tao Hu |
| collection | DOAJ |
| description | Micrometer- or submicrometer-sized metallic pillars are widely studied by investigators worldwide, not only to provide insights into fundamental phenomena, but also to explore potential applications in microelectromechanical system (MEMS) devices. While these materials with a diminutive volume exhibit unprecedented properties, e.g., strength values that approach the theoretical strength, their plastic flow is frequently intermittent as manifested by strain bursts, which is mainly attributed to dislocation activity at such length scales. Specifically, the increased ratio of free surface to volume promotes collective dislocation release resulting in dislocation starvation at the submicrometer scale or the formation of single-arm dislocation sources (truncated dislocations) at the micrometer scale. This article reviews and critically assesses recent progress in tailoring the microstructure of pillars, both extrinsically and intrinsically, to suppress plastic instabilities in micrometer or submicrometer-sized metallic pillars using an approach that involves confining the dislocations inside the pillars. Moreover, we identify strategies that can be implemented to fabricate submicrometer-sized metallic pillars that simultaneously exhibit stabilized plasticity and ultrahigh strength. |
| first_indexed | 2024-04-14T03:34:56Z |
| format | Article |
| id | doaj.art-bb30615fd0484be9826a6a51b6b28469 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-14T03:34:56Z |
| publishDate | 2016-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-bb30615fd0484be9826a6a51b6b284692022-12-22T02:14:47ZengMDPI AGCrystals2073-43522016-08-01689210.3390/cryst6080092cryst6080092Strategies to Approach Stabilized Plasticity in Metals with Diminutive Volume: A Brief ReviewTao Hu0Lin Jiang1Amiya K. Mukherjee2Julie M. Schoenung3Enrique J. Lavernia4Department of Chemical Engineering & Materials Science, University of California, Davis, CA 95616, USADepartment of Chemical Engineering & Materials Science, University of California, Davis, CA 95616, USADepartment of Chemical Engineering & Materials Science, University of California, Davis, CA 95616, USADepartment of Chemical Engineering & Materials Science, University of California, Irvine, CA 92607, USADepartment of Chemical Engineering & Materials Science, University of California, Irvine, CA 92607, USAMicrometer- or submicrometer-sized metallic pillars are widely studied by investigators worldwide, not only to provide insights into fundamental phenomena, but also to explore potential applications in microelectromechanical system (MEMS) devices. While these materials with a diminutive volume exhibit unprecedented properties, e.g., strength values that approach the theoretical strength, their plastic flow is frequently intermittent as manifested by strain bursts, which is mainly attributed to dislocation activity at such length scales. Specifically, the increased ratio of free surface to volume promotes collective dislocation release resulting in dislocation starvation at the submicrometer scale or the formation of single-arm dislocation sources (truncated dislocations) at the micrometer scale. This article reviews and critically assesses recent progress in tailoring the microstructure of pillars, both extrinsically and intrinsically, to suppress plastic instabilities in micrometer or submicrometer-sized metallic pillars using an approach that involves confining the dislocations inside the pillars. Moreover, we identify strategies that can be implemented to fabricate submicrometer-sized metallic pillars that simultaneously exhibit stabilized plasticity and ultrahigh strength.http://www.mdpi.com/2073-4352/6/8/92plastic instabilitystrain burstsnanopillarssofteningin situ TEM |
| spellingShingle | Tao Hu Lin Jiang Amiya K. Mukherjee Julie M. Schoenung Enrique J. Lavernia Strategies to Approach Stabilized Plasticity in Metals with Diminutive Volume: A Brief Review Crystals plastic instability strain bursts nanopillars softening in situ TEM |
| title | Strategies to Approach Stabilized Plasticity in Metals with Diminutive Volume: A Brief Review |
| title_full | Strategies to Approach Stabilized Plasticity in Metals with Diminutive Volume: A Brief Review |
| title_fullStr | Strategies to Approach Stabilized Plasticity in Metals with Diminutive Volume: A Brief Review |
| title_full_unstemmed | Strategies to Approach Stabilized Plasticity in Metals with Diminutive Volume: A Brief Review |
| title_short | Strategies to Approach Stabilized Plasticity in Metals with Diminutive Volume: A Brief Review |
| title_sort | strategies to approach stabilized plasticity in metals with diminutive volume a brief review |
| topic | plastic instability strain bursts nanopillars softening in situ TEM |
| url | http://www.mdpi.com/2073-4352/6/8/92 |
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