Short crack propagation analysis and fatigue strength assessment of additively manufactured materials: An application to AISI 316L

被引：30

作者：

Bergant, Marcos ^{[1
]}

Werner, Tiago ^{[2
]}

Madia, Mauro ^{[2
]}

Yawny, Alejandro ^{[1
,3
]}

Zerbst, Uwe ^{[2
]}

机构：

[1] Univ Nacl Cuyo, Ctr Atom Bariloche CNEA, Inst Balseiro, Div Fis Met, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[2] Bundesanstalt Mat Forsch & Prufung BAM, Div 9-4, D-12205 Berlin, Germany

[3] Consejo Nacl Invest Cient & Tecn, CONICET, Buenos Aires, DF, Argentina

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2021年 / 151卷

关键词：

Cyclic R-curve; Chapetti's and IBESS model; S-N curve; Kitagawa-Takahashi diagram; AM 316L stainless steel; CYCLIC R-CURVE; FRACTURE-MECHANICS; WELDED-JOINTS; THRESHOLD; BEHAVIOR; DEFECTS; STEEL; SENSITIVITY; PREDICTION; LIMIT;

D O I：

10.1016/j.ijfatigue.2021.106396

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper presents the application of short crack propagation models based on the cyclic R-curve for assessing the fatigue strength of additively manufactured (AM) materials containing fabrication defects. Chapetti's and IBESS models were implemented in combination with Murakami's root area parameter, considering recently published data on laser powder bed fusion processed AISI 316L stainless steels. Estimated S-N curves and KitagawaTakahashi diagrams predict fairly well the experimental data, especially the origin of the failure from internal or surface defects. These results provide an indication that the methods based on the cyclic R-curve constitute suitable tools for fatigue behavior assessment of AM materials.

引用

页数：14

共 45 条

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