Effect of hydrogen treatment on solidification structures and mechanical properties of TiAl alloys

X. W. Liu; Y. Q. Su; L. S. Luo; K. Li; F. Y. Dong; J. J. Guo; H. Z. Fu

doi:10.1016/j.ijhydene.2010.11.084

Effect of hydrogen treatment on solidification structures and mechanical properties of TiAl alloys

X. W. Liu
, Y. Q. Su
, L. S. Luo
, K. Li
, F. Y. Dong
, J. J. Guo
, H. Z. Fu

School of Materials Science and Engineering

Harbin Institute of Technology

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

30 Scopus citations

Abstract

The effect of hydrogen treatment (HT) on the solidification structures and mechanical properties of Ti-47Al alloys were studied using different contents of hydrogen. Experimental results indicate that together with the refinement of lamellar structure, the grain size of Ti-47Al alloys is reduced. With the hydrogen addition increasing to 1%, the grains of Ti-47Al alloys are refined from 1000 to 100 μm, and the average lamellar spacing of Ti-47Al alloys is decreased by approximately 50%. The hardness, compressive strength and yield stress of Ti-47Al alloys are improved due to the refinement effect of HT on grains and microstructures. The refinement effect of HT on cast TiAl alloys is found to be related to the enhancement of constitutional supercooling induced by hydrogen ahead of the solid-liquid interface.

Original language	English
Pages (from-to)	3260-3267
Number of pages	8
Journal	International Journal of Hydrogen Energy
Volume	36
Issue number	4
DOIs	https://doi.org/10.1016/j.ijhydene.2010.11.084
State	Published - Feb 2011

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Hydrogen
Mechanical property
Structure
TiAl alloy

Access to Document

10.1016/j.ijhydene.2010.11.084

Cite this

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title = "Effect of hydrogen treatment on solidification structures and mechanical properties of TiAl alloys",

abstract = "The effect of hydrogen treatment (HT) on the solidification structures and mechanical properties of Ti-47Al alloys were studied using different contents of hydrogen. Experimental results indicate that together with the refinement of lamellar structure, the grain size of Ti-47Al alloys is reduced. With the hydrogen addition increasing to 1\%, the grains of Ti-47Al alloys are refined from 1000 to 100 μm, and the average lamellar spacing of Ti-47Al alloys is decreased by approximately 50\%. The hardness, compressive strength and yield stress of Ti-47Al alloys are improved due to the refinement effect of HT on grains and microstructures. The refinement effect of HT on cast TiAl alloys is found to be related to the enhancement of constitutional supercooling induced by hydrogen ahead of the solid-liquid interface.",

keywords = "Hydrogen, Mechanical property, Structure, TiAl alloy",

author = "Liu, \{X. W.\} and Su, \{Y. Q.\} and Luo, \{L. S.\} and K. Li and Dong, \{F. Y.\} and Guo, \{J. J.\} and Fu, \{H. Z.\}",

year = "2011",

month = feb,

doi = "10.1016/j.ijhydene.2010.11.084",

language = "英语",

volume = "36",

pages = "3260--3267",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

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number = "4",

}

TY - JOUR

T1 - Effect of hydrogen treatment on solidification structures and mechanical properties of TiAl alloys

AU - Liu, X. W.

AU - Su, Y. Q.

AU - Luo, L. S.

AU - Li, K.

AU - Dong, F. Y.

AU - Guo, J. J.

AU - Fu, H. Z.

PY - 2011/2

Y1 - 2011/2

N2 - The effect of hydrogen treatment (HT) on the solidification structures and mechanical properties of Ti-47Al alloys were studied using different contents of hydrogen. Experimental results indicate that together with the refinement of lamellar structure, the grain size of Ti-47Al alloys is reduced. With the hydrogen addition increasing to 1%, the grains of Ti-47Al alloys are refined from 1000 to 100 μm, and the average lamellar spacing of Ti-47Al alloys is decreased by approximately 50%. The hardness, compressive strength and yield stress of Ti-47Al alloys are improved due to the refinement effect of HT on grains and microstructures. The refinement effect of HT on cast TiAl alloys is found to be related to the enhancement of constitutional supercooling induced by hydrogen ahead of the solid-liquid interface.

AB - The effect of hydrogen treatment (HT) on the solidification structures and mechanical properties of Ti-47Al alloys were studied using different contents of hydrogen. Experimental results indicate that together with the refinement of lamellar structure, the grain size of Ti-47Al alloys is reduced. With the hydrogen addition increasing to 1%, the grains of Ti-47Al alloys are refined from 1000 to 100 μm, and the average lamellar spacing of Ti-47Al alloys is decreased by approximately 50%. The hardness, compressive strength and yield stress of Ti-47Al alloys are improved due to the refinement effect of HT on grains and microstructures. The refinement effect of HT on cast TiAl alloys is found to be related to the enhancement of constitutional supercooling induced by hydrogen ahead of the solid-liquid interface.

KW - Hydrogen

KW - Mechanical property

KW - Structure

KW - TiAl alloy

UR - https://www.scopus.com/pages/publications/79951580104

U2 - 10.1016/j.ijhydene.2010.11.084

DO - 10.1016/j.ijhydene.2010.11.084

M3 - 文章

AN - SCOPUS:79951580104

SN - 0360-3199

VL - 36

SP - 3260

EP - 3267

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 4

ER -

Effect of hydrogen treatment on solidification structures and mechanical properties of TiAl alloys

Abstract

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Keywords

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