Effect of cyrstal orientation on tensile mechanical properties

The tensile mechanical properties of single-crystal face-centered cubic (FCC) aluminium (Al) are investigated via molecular dynamics (MD) simulation. Al is one of the largely used materials due to its good mechanical properties. The studies of Al have intensified interest towards new-Al based nanoma...

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Main Author: Soh, Jerome Wei Jie
Other Authors: Zhou Kun
Format: Final Year Project
Language:English
Published: 2016
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Online Access:http://hdl.handle.net/10356/68643
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-686432023-03-04T19:15:08Z Effect of cyrstal orientation on tensile mechanical properties Soh, Jerome Wei Jie Zhou Kun School of Mechanical and Aerospace Engineering DRNTU::Engineering The tensile mechanical properties of single-crystal face-centered cubic (FCC) aluminium (Al) are investigated via molecular dynamics (MD) simulation. Al is one of the largely used materials due to its good mechanical properties. The studies of Al have intensified interest towards new-Al based nanomaterials which have resulted in the production of new nanodevices that have smaller length scales and enhanced functionalities. However, the reduced length scales have led to challenges in material strength properties and thus, there is a demand for greater understanding of the tensile mechanical properties for such nanoscale materials and structures. Mechanical properties at the nanoscale have shown novel features that have yet to be captured in the macroscale. Moreover, the mechanical and physical properties of Al-based nanomaterials are highly dependent on its atomic structure, as it is often affected by strain, chemical functionalization and presence of structural interruptions during their application. Hence, this project aims to study and comprehend the effects of the crystallographic orientation, notch and temperature on the tensile mechanical properties of single-crystal Al via MD simulation. Firstly, the tensile mechanical properties of single-crystal Al is investigated when subjected to different crystal orientations. Tensile loading in the ,<100>, <110> and <111> directions is applied to the different single-crystal Al and it is found that the <100> tend to be the strongest orientation out of the 3 observed crystal orientations with <111> being the weakest. Secondly, the effect on the tensile mechanical properties of single-crystal Al is studied when a notch is added to the specimen. In general, the results have shown that the addition of the notch adversely affects the tensile mechanical properties. Lastly, the temperature effect is also considered and it is found that the increase in temperature on the material also has an adverse result on the tensile mechanical properties. Therefore, the findings made in this project have increased the understanding of the effects of the crystal orientations on the tensile mechanical properties of the single-crystal Al. This knowledge not only helps to ensure stronger Al-based nanodevices but it also ensures that they function optimally with minimum failure. As such, more progress can be achieved in their functionality enhancements and their applications. Bachelor of Engineering (Mechanical Engineering) 2016-05-30T05:27:15Z 2016-05-30T05:27:15Z 2016 Final Year Project (FYP) http://hdl.handle.net/10356/68643 en Nanyang Technological University 54 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering
spellingShingle DRNTU::Engineering
Soh, Jerome Wei Jie
Effect of cyrstal orientation on tensile mechanical properties
description The tensile mechanical properties of single-crystal face-centered cubic (FCC) aluminium (Al) are investigated via molecular dynamics (MD) simulation. Al is one of the largely used materials due to its good mechanical properties. The studies of Al have intensified interest towards new-Al based nanomaterials which have resulted in the production of new nanodevices that have smaller length scales and enhanced functionalities. However, the reduced length scales have led to challenges in material strength properties and thus, there is a demand for greater understanding of the tensile mechanical properties for such nanoscale materials and structures. Mechanical properties at the nanoscale have shown novel features that have yet to be captured in the macroscale. Moreover, the mechanical and physical properties of Al-based nanomaterials are highly dependent on its atomic structure, as it is often affected by strain, chemical functionalization and presence of structural interruptions during their application. Hence, this project aims to study and comprehend the effects of the crystallographic orientation, notch and temperature on the tensile mechanical properties of single-crystal Al via MD simulation. Firstly, the tensile mechanical properties of single-crystal Al is investigated when subjected to different crystal orientations. Tensile loading in the ,<100>, <110> and <111> directions is applied to the different single-crystal Al and it is found that the <100> tend to be the strongest orientation out of the 3 observed crystal orientations with <111> being the weakest. Secondly, the effect on the tensile mechanical properties of single-crystal Al is studied when a notch is added to the specimen. In general, the results have shown that the addition of the notch adversely affects the tensile mechanical properties. Lastly, the temperature effect is also considered and it is found that the increase in temperature on the material also has an adverse result on the tensile mechanical properties. Therefore, the findings made in this project have increased the understanding of the effects of the crystal orientations on the tensile mechanical properties of the single-crystal Al. This knowledge not only helps to ensure stronger Al-based nanodevices but it also ensures that they function optimally with minimum failure. As such, more progress can be achieved in their functionality enhancements and their applications.
author2 Zhou Kun
author_facet Zhou Kun
Soh, Jerome Wei Jie
format Final Year Project
author Soh, Jerome Wei Jie
author_sort Soh, Jerome Wei Jie
title Effect of cyrstal orientation on tensile mechanical properties
title_short Effect of cyrstal orientation on tensile mechanical properties
title_full Effect of cyrstal orientation on tensile mechanical properties
title_fullStr Effect of cyrstal orientation on tensile mechanical properties
title_full_unstemmed Effect of cyrstal orientation on tensile mechanical properties
title_sort effect of cyrstal orientation on tensile mechanical properties
publishDate 2016
url http://hdl.handle.net/10356/68643
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