Fatigue-Crack-Growth Behavior of Two Pipeline Steels

被引：1

作者：

Chen, Bilin ^{[1
]}

Wang, Gongyao ^{[1
]}

Chen, Shuying ^{[1
]}

Muralidharan, Govindarajan ^{[2
]}

Stalheim, Doug ^{[3
]}

Sun, An-Cheng ^{[4
]}

Huang, E-Wen ^{[5
,6
]}

Liaw, Peter K. ^{[1
]}

机构：

[1] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[2] Oak Ridge Natl Lab, One Bethel Valley Rd, Oak Ridge, TN 37831 USA

[3] DGS Met Solut Inc, 15003 NE 10th St, Vancouver, WA 98684 USA

[4] Yuan Ze Univ, Dept Chem Engn & Mat Sci, 135 Yuan Tung Rd, Chungli 32003, Taiwan

[5] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan

[6] Ind Technol Res Inst, Mat & Chem Res Labs, Zhudong 31040, Hsinchu County, Taiwan

来源：

ADVANCED ENGINEERING MATERIALS | 2016年 / 18卷 / 12期

基金：

美国国家科学基金会;

关键词：

NEUTRON-DIFFRACTION; STRESS RATIOS; TIP; ALLOY; EVOLUTION; CLOSURE;

D O I：

10.1002/adem.201600340

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The fatigue-crack-growth behavior of two types of pipeline steels, Alloy B [Fe-0.05C-1.52Mn-0.12Si-0.092Nb, weight percent (wt%)] and Alloy C (Fe-0.04C-1.61Mn-0.14Si-0.096Nb, wt%), have been investigated. Compact-tension (CT) specimens have been tested at various frequencies (10, 1, and 0.1 Hz) and different R ratios (0.1 and 0.5, R = P-min/P-max where P-min is the minimum applied load, and P-max is the maximum applied load) in air. It is concluded that higher R ratios lead to faster crack-growth rates (FCGRs), while frequency does not have much influence on FCGRs. Moreover, Alloy B tends to have better fatigue resistance than Alloy C under various test conditions in air.

引用

页码：2028 / 2039

页数：12

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