PBF-LB Processability, Microstructure and Properties of an Advanced High Strength Powder Steel
Paper i proceeding, 2024

With the advent of additive manufacturing (AM), there is a need for new materials in the field of structural materials. The primary challenge hindering the widespread use of traditional ferrous materials for this purpose is the high carbon content (>0.1%), making the processing difficult. This study aims to explore the processability window and consequent microstructure and properties of a novel low-alloyed steel powder processed using Powder Bed Fusion - Laser Beam (PBF-LB). Process parameters were developed for two different layer thicknesses of 30 and 60 µm to obtain fully dense (~99.9%) and crack free specimens. An in-depth process map was created by characterizing the dimensions and regularity of melt pools using optical microscopy, and further microstructural analysis was carried out using Scanning Electron Microscopy (SEM) revealing the features of a martensitic microstructure. Subsequently, the optimized parameter sets were used to produce tensile and impact testing specimens used to evaluate the mechanical performance of the alloy.

Författare

Satya Chaitanya Vaddamanu

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Hugo Wärner

SSAB AB

Ulrika Fager

SSAB AB

Eduard Hryha

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Proceedings - Euro PM 2024 Congress and Exhibition


9781899072583 (ISBN)

2024 European Powder Metallurgy Congress and Exhibition, Euro PM 2024
Malmö, Sweden,

Ämneskategorier (SSIF 2025)

Metallurgi och metalliska material

Bearbetnings-, yt- och fogningsteknik

DOI

10.59499/EP246281555

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Senast uppdaterat

2025-03-10