Fatigue Crack Growth Rates and Tensile Strength of Titanium Produced by Means of Selective Laser Melting

Tomasz Brynk; Barbara Romelczyk-Baishya; Zbigniew Pakiela; Tomasz Kurzynowski; Edward Chlebus

doi:10.4028/www.scientific.net/KEM.627.305

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 627Fatigue Crack Growth Rates and Tensile Strength of...

Fatigue Crack Growth Rates and Tensile Strength of Titanium Produced by Means of Selective Laser Melting

Abstract:

Mini-samples technique was utilized to determine mechanical properties of technically pure titanium produced by means of selective laser melting (SLM). Full-field digital image correlation (DIC) measurements and inverse method were applied for crack tip position and stress intensity factors calculations in the case of fatigue crack growth rate tests. DIC was also used for strain measurement during tensile tests on sub sized samples. There was studied the influence of samples orientation on the mechanical properties of mini-samples. Samples were cut out from rectangular cubes and were oriented with 0°, 45° or 90° angle to the direction of laser beam travel. There were also tested samples directly produced via SLM. Additionally microstructure observations were performed to verify the quality of SLM processed materials and explain mechanical properties variations.

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Periodical:

Key Engineering Materials (Volume 627)

Pages:

305-308

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.627.305

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Online since:

September 2014

Authors:

Tomasz Brynk*, Barbara Romelczyk-Baishya, Zbigniew Pakiela, Tomasz Kurzynowski, Edward Chlebus

Keywords:

Digital Image Correlation (DIC), Fatigue Crack Growth Rate, Mini-Samples, Selective Laser Melting (SLM), Titanium

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