Understanding fatigue crack propagation pathways in Additively Manufactured AlSi10Mg

被引：1

作者：

Rangaraj, S. ^{[1
]}

Ahmed, S. S., I ^{[1
]}

Davis, A. ^{[1
]}

Withers, P. J. ^{[1
]}

Gholinia, A. ^{[1
]}

机构：

[1] Univ Manchester, Henry Royce Inst, Dept Mat, Manchester M13 9PL, Lancs, England

来源：

44TH RISO INTERNATIONAL SYMPOSIUM ON MATERIALS SCIENCE, RISO 2024 | 2024年 / 1310卷

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1088/1757-899X/1310/1/012025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Alloys produced through additive manufacturing (AM) offer substantial advantages, particularly in controlling material utilisation and precisely manipulating processing parameters, resulting in finely tuned material properties. However, the grain structure of AM material is typically complex, influenced by factors such as solidification dynamics, processing parameters, thermal gradients, and residual stress. Fatigue analysis shows considerable scatter due to entrained defects which limits their use as structural components. In this study, fatigue-failed samples from selective laser melted (SLM) AlSi10Mg alloy, oriented horizontal and vertical to the build direction were analysed to understand crack propagation paths. Here X-ray Computed Tomography (CT) was used to examine internal porosity from which fatigue cracks initiate, complemented by electron backscattered diffraction (EBSD) mapping. This enabled us to recognize the crucial role of the complex grain microstructure in controlling fatigue crack propagation.

引用

页数：6

共 10 条

[1]

Aboulkhair N.T., 2014, ADDIT MANUF, V1-4, P77, DOI [10.1016/j.addma.2014.08.001, DOI 10.1016/J.ADDMA.2014.08.001]

[2] A machine-learning fatigue life prediction approach of additively manufactured metals [J].

Bao, Hongyixi ;

Wu, Shengchuan ;

Wu, Zhengkai ;

Kang, Guozheng ;

Peng, Xin ;

Withers, Philip J. .

ENGINEERING FRACTURE MECHANICS, 2021, 242

[3] Additive manufacturing of metallic components - Process, structure and properties [J].

DebRoy, T. ;

Wei, H. L. ;

Zuback, J. S. ;

Mukherjee, T. ;

Elmer, J. W. ;

Milewski, J. O. ;

Beese, A. M. ;

Wilson-Heid, A. ;

De, A. ;

Zhang, W. .

PROGRESS IN MATERIALS SCIENCE, 2018, 92 :112-224

[4] Influence of Microstructure on Fracture Mechanisms of the Heat-Treated AlSi10Mg Alloy Produced by Laser-Based Powder Bed Fusion [J].

Di Egidio, Gianluca ;

Martini, Carla ;

Borjesson, Johan ;

Ghassemali, Ehsan ;

Ceschini, Lorella ;

Morri, Alessandro .

MATERIALS, 2023, 16 (05)

[5] Detection, classification and prediction of internal defects from surface morphology data of metal parts fabricated by powder bed fusion type additive manufacturing using an electron beam [J].

Gui, Yunwei ;

Aoyagi, Kenta ;

Bian, Huakang ;

Chiba, Akihiko .

ADDITIVE MANUFACTURING, 2022, 54

[6] A review on the fatigue behaviour of AlSi10Mg alloy fabricated using laser powder bed fusion technique [J].

Raja, A. ;

Cheethirala, Srinivasa Rakesh ;

Gupta, Pallavi ;

Vasa, Nilesh J. ;

Jayaganthan, R. .

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2022, 17 :1013-1029

[7] Microstructural effects on short fatigue crack propagation in cast Al-Si alloys [J].

Ren, Peirong ;

Withers, Philip J. ;

Zuo, Zhengxing ;

Feng, Huihua ;

Huang, Weiqing .

INTERNATIONAL JOURNAL OF FATIGUE, 2023, 175

[8] Fine-structured aluminium products with controllable texture by selective laser melting of pre-alloyed AlSi10Mg powder [J].

Thijs, Lore ;

Kempen, Karolien ;

Kruth, Jean-Pierre ;

Van Humbeeck, Jan .

ACTA MATERIALIA, 2013, 61 (05) :1809-1819

[9] The role of internal defects on anisotropic tensile failure of L-PBF AlSi10Mg alloys [J].

Wu, Zhengkai ;

Wu, Shengchuan ;

Gao, Xi ;

Lin, Ying ;

Xue, Yanling ;

Withers, Philip J. .

SCIENTIFIC REPORTS, 2023, 13 (01)

[10] The effect of defect population on the anisotropic fatigue resistance of AlSi10Mg alloy fabricated by laser powder bed fusion [J].

Wu, Zhengkai ;

Wu, Shengchuan ;

Bao, Jianguang ;

Qian, Weijian ;

Karabal, Suleyman ;

Sun, Wei ;

Withers, Philip J. .

INTERNATIONAL JOURNAL OF FATIGUE, 2021, 151

← 1 →