| URN | etd-0730109-181357 | Statistics | This thesis had been viewed 752 times. Download 0 times. |
| Author | SHAO-HSUN CHANG | ||
| Author's Email Address | hui01194@yahoo.com.tw | ||
| Department | Institute of Mechatronic Engineering | ||
| Year | 2008 | Semester | 2 |
| Degree | Master | Type of Document | Master's Thesis |
| Language | zh-TW.Big5 Chinese | Page Count | 60 |
| Title | Molecular dynamics simulations to investigate the microstructure and Young's modulus of high-entropy alloys |
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| Abstract | CuCrFeNi alloy in this paper is based on the proportion of different ingredients and then add the aluminum atoms five-element entropy alloys. To the methods of molecular dynamics simulation. MD simulation using average <NVT> ensemble potential energy function criteria and COMPASS. The use of its simulation of high-entropy alloys in high temperature melting, annealing and quenching a different rate, the use of Radial distribution function (RDF), Wendt-Abraham parameter, X-ray diffractometer (XRD) and other methods to analyze the phase change. Analysis method to simulate the ratio of discussion to add the impact of Young's modulus. Simulation results show that, AlXCuCrFeNi alloy quenched at high temperatures, and the amorphous structure into a state are, with the ratio of aluminum to add increased, its glass transition temperature will be the trend moving towards low-temperature. With the increase in aluminum, Young has been an upward trend values, and its temperature and also increases Finally, molecular dynamics simulation of a bottleneck and improve the methods, as the direction of future efforts |
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| Files | indicate not accessible | ||
| Date of Defense | 2009-07-28 | Date of Submission | 2009-07-30 |