Increase of bending fatigue resistance for tungsten inert gas welded SS400 steel plates using friction stir processing

被引：16

作者：

Ito, Kazuhiro ^{[1
]}

Okuda, Tatsuya ^{[1
]}

Ueji, Rintaro ^{[1
]}

Fujii, Hidetoshi ^{[1
]}

Shiga, Chiaki ^{[1
]}

机构：

[1] Osaka Univ, Joining & Welding Res Inst, Ibaraki, Osaka 5670047, Japan

来源：

MATERIALS & DESIGN | 2014年 / 61卷

基金：

日本科学技术振兴机构;

关键词：

Structural steel; Tungsten inert gas; Friction stir processing; Bending fatigue; ULTRASONIC PEENING TREATMENT; JOINTS; STRENGTH; ENHANCEMENT; IMPROVEMENT; BEHAVIOR; LIFE;

D O I：

10.1016/j.matdes.2014.04.076

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To improve the fatigue resistance of tungsten inert gas (TIG)-welded SS400 steel plates, friction stir processing (FSP) was performed on TIG weld beads. Although the tensile properties of the TIG-welded steel plates with FSP were similar to those without FSP, their bending strength exhibited about 1.4 GPa at room temperature, which was 40% higher than that without FSP (about 1 GPa). Similarly, FSP produced about 170% increase in the number of cycles to failure at an applied stress amplitude of 270 MPa during three-point bending fatigue at room temperature. A fine-grained FSP region (grain sizes of about 1-2 mu m in diameter) enhanced grain-boundary strengthening, leading to the higher bending strength and bending fatigue resistance. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：275 / 280

页数：6

共 26 条

[21] Thomas W, 1999, OPT PHOTONICS NEWS, V10, P4
[22] Discussion on fatigue design of welded joints enhanced by ultrasonic peening treatment (UPT)
Wang Ting
Wang Dongpo
Huo Lixing
Zhang Yufeng
[J]. INTERNATIONAL JOURNAL OF FATIGUE, 2009, 31 (04) : 644 - 650
[23] EDGE LAYER CONDITION AND FATIGUE STRENGTH of welds improved by mechanical post-weld treatment
Weich, I.
[J]. WELDING IN THE WORLD, 2011, 55 (1-2) : 3 - 12
[24] FATIGUE BEHAVIOUR OF WELDED HIGH-STRENGTH STEELS AFTER HIGH FREQUENCY MECHANICAL POST-WELD TREATMENTS
Weich, I.
Ummenhofer, T.
Nitschke-Pagel, Th.
Dilger, K.
Eslami, H.
[J]. WELDING IN THE WORLD, 2009, 53 (11-12) : R322 - R332
[25] The effects of ultrasonic peening treatment on the ultra-long life fatigue behavior of welded joints
Yin, Danqing
Wang, Dongpo
Jing, Hongyang
Huo, Lixing
[J]. MATERIALS & DESIGN, 2010, 31 (07) : 3299 - 3307
[26] Analysis of the S-N curves of welded joints enhanced by ultrasonic peening treatment
Zhao, Xiaohui
Wang, Dongpo
Huo, Lixing
[J]. MATERIALS & DESIGN, 2011, 32 (01) : 88 - 96

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