钛合金BT20焊接接头腐蚀疲劳性能的实验研究

中国腐蚀与防护学报

2010, Vol. 30

Issue (4): 313-316

研究报告

本期目录 | 过刊浏览

钛合金BT20焊接接头腐蚀疲劳性能的实验研究

包俊成,赵捷,王志奇,马叙

天津理工大学材料科学与工程学院天津 300384

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

全文: PDF(612 KB)

摘要:

BT20钛合金焊接接头的轴向疲劳性能在应力集中系数K_t=1时的各种应力比的条件下，盐雾环境和SO₂酸性盐雾环境下的疲劳寿命都有所降低，其中 SO₂酸性盐雾环境对疲劳寿命影响最显著；在疲劳寿命N=10⁵处，应力比 R由0.5变为0.06时，潮湿空气使疲劳强度下降18%，盐雾腐蚀使疲劳强度下降16%，SO₂酸性盐雾使疲劳强度下降7%。

关键词 ： BT20钛合金, 焊接件, 腐蚀介质, 疲劳强度, 疲劳寿命

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

收稿日期: 2009-03-03

ZTFLH:

TG405

基金资助:

东北大学轧制技术及连轧自动化国家重点实验室开放课题基金项目(2009011)

通讯作者: 包俊成 E-mail: old_bao@sina.com

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

作者简介: 包俊成，男，1965年生，研究员级高级工程师，研究方向为材料性能表征，材料失效分析和预测预防

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引用本文:

包俊成,赵捷,王志奇,马叙. 钛合金BT20焊接接头腐蚀疲劳性能的实验研究[J]. 中国腐蚀与防护学报, 2010, 30(4): 313-316.
FU Jun-Cheng.
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.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2010/V30/I4/313

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