4.6 Article

Fracture behaviour of additively manufactured MS1-H13 hybrid hard steels

期刊

MATERIALS LETTERS
卷 212, 期 -, 页码 174-177

出版社

ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2017.10.097

关键词

Deformation; Fracture; Interfaces; Laser processing; Microstructure; Sintering

资金

  1. Natural Sciences and Engineering Research Council of Canada (NSERC) [RGPIN-2016-04221]
  2. New Brunswick Innovation Foundation (NBIF) [RAI 2016-108]

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This study investigated the tensile and fracture behaviour of additively manufactured MS1-H13 hybrid hard steel. Samples were prepared using Direct Metal Laser Sintering (DMLS) technique to additively deposit MS1 powder on as received H13 tool steel round bars. Four different heat-treatments were subsequently applied to the samples and uniaxial tensile tests to fracture were completed. Results found peak hardness/strength could be achieved with a single heat-treatment cycle and fracture in peak hardened samples occurred in MS1 adjacent to the print interface, as verified by Energy Dispersive X-ray (EDX) analysis. As-printed samples fractured in the H13 material away from the interface. (C) 2017 Elsevier B.V. All rights reserved.

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