In situ study of phase transformations in Ti-6Al-4V-xH alloys

Ying Ying Zong; Shu Hui Huang; Bin Guo; De Bin Shan

doi:10.1016/S1003-6326(15)63916-4

In situ study of phase transformations in Ti-6Al-4V-xH alloys

Ying Ying Zong
, Shu Hui Huang
, Bin Guo
, De Bin Shan^*

^*Corresponding author for this work

Harbin Institute of Technology
General Research Institute for Non-ferrous Metals China

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

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'→β_H↑α'→α_H+β_H↑α_H→α+H₂↑α→β↑β_H→β+H₂↑. In addition, the relationship among hydrogenation and M_s and M_f of α' martensite were determined.

Original language	English
Pages (from-to)	2901-2911
Number of pages	11
Journal	Transactions of Nonferrous Metals Society of China (English Edition)
Volume	25
Issue number	9
DOIs	https://doi.org/10.1016/S1003-6326(15)63916-4
State	Published - Sep 2015
Externally published	Yes

Keywords

hydrogen
in situ
phase transformation
titanium alloy

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10.1016/S1003-6326(15)63916-4

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@article{e08d2cb187f04f9fbff3168c9f0c0d59,

title = "In situ study of phase transformations in Ti-6Al-4V-xH alloys",

abstract = "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.",

keywords = "hydrogen, in situ, phase transformation, titanium alloy",

author = "Zong, \{Ying Ying\} and Huang, \{Shu Hui\} and Bin Guo and Shan, \{De Bin\}",

note = "Publisher Copyright: {\textcopyright} 2015 The Nonferrous Metals Society of China.",

year = "2015",

month = sep,

doi = "10.1016/S1003-6326(15)63916-4",

language = "英语",

volume = "25",

pages = "2901--2911",

journal = "Transactions of Nonferrous Metals Society of China (English Edition)",

issn = "1003-6326",

publisher = "Nonferrous Metals Society of China",

number = "9",

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TY - JOUR

T1 - In situ study of phase transformations in Ti-6Al-4V-xH alloys

AU - Zong, Ying Ying

AU - Huang, Shu Hui

AU - Guo, Bin

AU - Shan, De Bin

PY - 2015/9

Y1 - 2015/9

N2 - 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.

AB - 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.

KW - hydrogen

KW - in situ

KW - phase transformation

KW - titanium alloy

UR - https://www.scopus.com/pages/publications/84943411130

U2 - 10.1016/S1003-6326(15)63916-4

DO - 10.1016/S1003-6326(15)63916-4

M3 - 文章

AN - SCOPUS:84943411130

SN - 1003-6326

VL - 25

SP - 2901

EP - 2911

JO - Transactions of Nonferrous Metals Society of China (English Edition)

JF - Transactions of Nonferrous Metals Society of China (English Edition)

IS - 9

ER -

In situ study of phase transformations in Ti-6Al-4V-xH alloys

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Keywords

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