Effect of microstructure on room-temperature hydrogen absorption behavior of Ti-6Al-4V alloy

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Effect of microstructure on room-temperature hydrogen absorption behavior of Ti-6Al-4V alloy
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                        LIU SongLIU Song
College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics
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WANG YingangWANG Yingang
College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics
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Affiliation:College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics
Clc Number:TG113
Fund Project:National Natural Science Foundation of China (50961008, 51061008); “973” Program (2011CB612203); Research Fund for the Doctoral Program of Higher Education of China (20116201120003); Natural Science Foundation of Gansu Province of China (1107RJYA275); Natural Science Foundation of Zhejiang Province of China (LQ13E010002)

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Abstract:

In this paper, the effect of microstructure on the room-temperature hydrogen absorption behavior of Ti-6Al-4V alloy was studied through electrolytic hydrogen charging method. The results show that Ti-6Al-4V alloys with different microstructures show obviously different room-temperature hydrogen absorbing ability. The hydrogen absorbing ability of the alloy with duplex microstructure is the weakest and that of the alloy with widmanstatten microstructure is the strongest at room temperature. The influence of the microstructure characteristics of β phase is stronger than that of α phase on the capability for room-temperature hydrogen absorption. The Ti-6Al-4V titanium alloy with duplex microstructure should be the one with a perfect resistance to the hydrogen embrittlement.

Key words:Ti-6Al-4V; Hydrogen absorption; Microstructure

Reference

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[LIU Song, WANG Yingang. Effect of microstructure on room-temperature hydrogen absorption behavior of Ti-6Al-4V alloy[J]. Rare Metal Materials and Engineering,2017,46(8):2240~2243.]
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Received:April 13,2015
Revised:April 12,2016
Adopted:May 18,2016
Online: November 16,2017
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