Ti-6Al-4V-xH合金相转变的原位研究
研究在加热和冷却过程中的氢致Ti-6Al-4V合金组织转变和相转变。试样从室温加热到1273 K,随后又冷却至室温。氢含量范围为0~0.8%（质量分数）。系统研究氢致Ti-6Al-4V合金动态相变过程及相应的机制。当氢含量增大时,β相转变温度显著降低,但幅度趋缓,并且β相体积分数逐渐增加。在加热过程中,置氢Ti-6Al-4V合金的相转变可以分为三个阶段,具体的过程是：δ→α＋H2↑？δ＋α′→βH？α′→αH＋βH？αH→α＋H2↑？α→β？βH→β＋H2↑。另外,也对氢含量与α′马氏体的Ms和Mf的关系进行研究。...
Saved in:
| Published in | 中国有色金属学报：英文版 Vol. 25; no. 9; pp. 2901 - 2911 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
2015
|
| Subjects | |
| Online Access | Get full text |
| ISSN | 1003-6326 |
Cover
| Summary: | 研究在加热和冷却过程中的氢致Ti-6Al-4V合金组织转变和相转变。试样从室温加热到1273 K,随后又冷却至室温。氢含量范围为0~0.8%（质量分数）。系统研究氢致Ti-6Al-4V合金动态相变过程及相应的机制。当氢含量增大时,β相转变温度显著降低,但幅度趋缓,并且β相体积分数逐渐增加。在加热过程中,置氢Ti-6Al-4V合金的相转变可以分为三个阶段,具体的过程是：δ→α＋H2↑？δ＋α′→βH？α′→αH＋βH？αH→α＋H2↑？α→β？βH→β＋H2↑。另外,也对氢含量与α′马氏体的Ms和Mf的关系进行研究。 |
|---|---|
| Bibliography: | 43-1239/TG The hydrogen-induced microstructure evolution and phase transformations in Ti-6Al-4V alloy during heating and cooling were studied.The specimens were heated to 1273 K and subsequently cooled to room temperature.The hydrogen content is up to 0.8%（mass fraction）.The hydrogen-induced dynamic phase transformations and the corresponding mechanisms were analyzed.When the hydrogen content increases,the β transus temperature significantly decreases and the magnitude decreases,and the volume fraction of β phase increases.During heating,the phase transformations in hydrogenated Ti-6Al-4V alloys can be divided into three stages,and the phase transformation order is δ→α＋H2↑？δ＋α′→βH？α′→αH＋βH？αH→α＋H2↑？α→β？βH→β＋H2↑.In addition,the relationship among hydrogenation and Ms and Mf of α′ martensite were determined. titanium alloy; phase transformation; hydrogen; in situ Ying-ying ZONG, Shu-hui HUANG, Bin GUO, De-bin SHAN（ 1. National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China; 2. State Key Laboratory of Nonferrous Metals and Processes, Beijing General Research Institute for Nonferrous Metals, Beijing 100088, China） |
| ISSN: | 1003-6326 |