Phase Transformation of Stress Induction on Ti-6Al-4V Alloy
碩士 === 國立屏東科技大學 === 機械工程系所 === 98 === Ti-6Al-4V alloy was forging in different temperatures processed, different forging ratio, after 450~550℃ heat treatment, by X ray diffraction (XRD) and scanning electron microscopy (SEM) and Transmission electron microscopy (TEM) observation. In accordance with...
Main Authors: | , |
---|---|
Other Authors: | |
Format: | Others |
Language: | zh-TW |
Published: |
2010
|
Online Access: | http://ndltd.ncl.edu.tw/handle/17816013605421780678 |
id |
ndltd-TW-098NPUS5489016 |
---|---|
record_format |
oai_dc |
spelling |
ndltd-TW-098NPUS54890162016-12-22T04:18:18Z http://ndltd.ncl.edu.tw/handle/17816013605421780678 Phase Transformation of Stress Induction on Ti-6Al-4V Alloy 鈦-6鋁-4釩合金相分解現象 Wun-Kai Wang 王文楷 碩士 國立屏東科技大學 機械工程系所 98 Ti-6Al-4V alloy was forging in different temperatures processed, different forging ratio, after 450~550℃ heat treatment, by X ray diffraction (XRD) and scanning electron microscopy (SEM) and Transmission electron microscopy (TEM) observation. In accordance with the experimental result, alloy from 800℃ forging, Low forging ratio and high forging ratio, the microstructure is fine-grained α + α + α"+ β-phase. By XRD (0002) diffraction peak is the maximum. Alloy from 950℃ forging, Low forging ratio, the microstructure is equiaxed α + lath α + acicular martensite α' + α" + β-phase. High forging ratio, non-thermal reaction ω-phase precipitation. By XRD (0002) and (01-11) diffraction peak is the quite.Alloy from 1050℃ forging the microstructure is α' + α' + α" + β-phase. By XRD (01-11) diffraction peak is the maximum. Microstructure is Hexagonal-Closed-Packed (H.C.P) microstructure of α-phase, acicular martensitic structure of α'-phase, ω-phase and the orthorhombic α"-phase. Body-Centered-Cubic (B.C.C) structure of the β-phase, The lattice parameter of α-phase is a=0.295nm、c=0.466nm,c/a ratio of 1.579; α'-phase with a = 0.291nm, c = 0.465nm, c/a ratio of 1.597; α"-phase with a = 0.303nm, b = 0.492nm, c = 0.466nm; ω-phase with a = 0.468nm, c = 0.293nm; β-phase with a = 0.327nm. Key words: Titanium alloy, Forging, Texture. Lay-Gaik Teoh Chih-Yeh Chao 張莉毓 趙志燁 2010 學位論文 ; thesis 68 zh-TW |
collection |
NDLTD |
language |
zh-TW |
format |
Others
|
sources |
NDLTD |
description |
碩士 === 國立屏東科技大學 === 機械工程系所 === 98 === Ti-6Al-4V alloy was forging in different temperatures processed, different forging ratio, after 450~550℃ heat treatment, by X ray diffraction (XRD) and scanning electron microscopy (SEM) and Transmission electron microscopy (TEM) observation.
In accordance with the experimental result, alloy from 800℃ forging, Low forging ratio and high forging ratio, the microstructure is fine-grained α + α + α"+ β-phase. By XRD (0002) diffraction peak is the maximum. Alloy from 950℃ forging, Low forging ratio, the microstructure is equiaxed α + lath α + acicular martensite α' + α" + β-phase. High forging ratio, non-thermal reaction ω-phase precipitation. By XRD (0002) and (01-11) diffraction peak is the quite.Alloy from 1050℃ forging the microstructure is α' + α' + α" + β-phase. By XRD (01-11) diffraction peak is the maximum.
Microstructure is Hexagonal-Closed-Packed (H.C.P) microstructure of α-phase, acicular martensitic structure of α'-phase, ω-phase and the orthorhombic α"-phase. Body-Centered-Cubic (B.C.C) structure of the β-phase, The lattice parameter of α-phase is a=0.295nm、c=0.466nm,c/a ratio of 1.579; α'-phase with a = 0.291nm, c = 0.465nm, c/a ratio of 1.597; α"-phase with a = 0.303nm, b = 0.492nm, c = 0.466nm; ω-phase with a = 0.468nm, c = 0.293nm; β-phase with a = 0.327nm.
Key words: Titanium alloy, Forging, Texture.
|
author2 |
Lay-Gaik Teoh |
author_facet |
Lay-Gaik Teoh Wun-Kai Wang 王文楷 |
author |
Wun-Kai Wang 王文楷 |
spellingShingle |
Wun-Kai Wang 王文楷 Phase Transformation of Stress Induction on Ti-6Al-4V Alloy |
author_sort |
Wun-Kai Wang |
title |
Phase Transformation of Stress Induction on Ti-6Al-4V Alloy |
title_short |
Phase Transformation of Stress Induction on Ti-6Al-4V Alloy |
title_full |
Phase Transformation of Stress Induction on Ti-6Al-4V Alloy |
title_fullStr |
Phase Transformation of Stress Induction on Ti-6Al-4V Alloy |
title_full_unstemmed |
Phase Transformation of Stress Induction on Ti-6Al-4V Alloy |
title_sort |
phase transformation of stress induction on ti-6al-4v alloy |
publishDate |
2010 |
url |
http://ndltd.ncl.edu.tw/handle/17816013605421780678 |
work_keys_str_mv |
AT wunkaiwang phasetransformationofstressinductiononti6al4valloy AT wángwénkǎi phasetransformationofstressinductiononti6al4valloy AT wunkaiwang tài6lǚ4fǎnhéjīnxiāngfēnjiěxiànxiàng AT wángwénkǎi tài6lǚ4fǎnhéjīnxiāngfēnjiěxiànxiàng |
_version_ |
1718404032589987840 |