EXPERIMENTAL RESEARCH ON FATIGUE PROPERTY OF WELDED JOINTS OF BT20 TITANIUM ALLOY IN CORROSION ENVIRONMENT

J Chin Soc Corr Pro

2010, Vol. 30

Issue (4): 313-316 DOI:

Research Articles

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EXPERIMENTAL RESEARCH ON FATIGUE PROPERTY OF WELDED JOINTS OF BT20 TITANIUM ALLOY IN CORROSION ENVIRONMENT

BAO Juncheng, ZHAO Jie, WANG Zhiqi, MA Xu

School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384

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Abstract

The axial loading fatigue testing results show that the fatigue life of welded joints of BT20 titanium alloy decreased under the condition of salt fog, SO₂ and salt fog at different stress radio and stress concentration factor K_t=1. The loss of fatigue life was obvious in acidic of SO₂ and salt fog. As stress ratio R changsed from 0.5 to 0.06 at fatigue life N=10⁵, wet air made fatigue strength decreases 18%，salt fog made fatigue strength decreases 16%, SO₂ and salt fog made fatigue strength decreases 7%.

Key words: BT20 titanium alloy, welding joint corrosion environment fatigue strength fatigue life

Received: 03 March 2009

ZTFLH:

TG405

Corresponding Authors: BAO Juncheng E-mail: old_bao@sina.com

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Cite this article:

BAO Juncheng, ZHAO Jie, WANG Zhiqi, MA Xu.
EXPERIMENTAL RESEARCH ON FATIGUE PROPERTY OF WELDED JOINTS OF BT20 TITANIUM ALLOY IN CORROSION ENVIRONMENT. J Chin Soc Corr Pro, 2010, 30(4): 313-316.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2010/V30/I4/313

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