Effects of the Heat Treatment on the Mechanical Properties of the Ti-6Al-4V Alloy

• Main Author: 朱執中
• Other Authors: Dr.Chih-Yeh Chao
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/57898562694588572066

碩士 === 國立屏東科技大學 === 機械工程系所 === 100 === Abstract Student ID：N9932023 Title of Thesis：Effects of the Heat Treatment on the Mechanical Properties of the Ti-6Al-4V Alloy Total Pages：42 Name of Institute：National Pingtung University of Science and Techology Name of Department：Department of Mechanical Engineering Date of Graduation：July,2012 Degree Conferred：Master Name of Student：Zhi-Zhong Zhu Adviser：Dr.Chih-Yeh Chao The Contents of Abstract in this Thesis： The manuscripts are focus on the Effects of the Heat Treatment on the Mechanical Properties of the Ti-6Al-4V Alloy: 一、 Effect on Ti-6Al-4V Alloy of air-cooled on tensile strength, yield strength, elongation,and effect of water -cooled on tensile strength, yield strength,elong- ation, which the tensile strength of about 138kpsi yield strength of about in 120kpsi around. Tensile strength which the temperature rises, the elongation decreased, will result in the phenomenon of brittle fracture. 二、 The spectrum analyzer to measure the frequency response function：Use ME'Scope VES software corresponds to the damping ratio, which is air-cooled data due to the temperature rise, which the highest value of 0.5543% of 1000 ℃, the opposite water-cooled data because of the temperature rise in damping ratio downward trend, which the lowest value of 0.175% of 1000 ℃. 三、 Comparison of the microstructure：In this article by the one-hour aging, respectively, air-cooled, water cooled to experiment, mainly in the tensile test,pull-off test bars observation of the fracture surface of the micro-structural organization, and near the fracture surface of the surface structure. 四、 Use specimens cut Ti-6Al-4V to hardness testing machine to statistics of the distribution curve of the hardness in a variety of temperature and water-cooled, air-cooled. Key word：Damping ratio, microstructure, tensile strength, yield strength, fracture