Next Article in Journal
Liquid Phase Sintering of (Ti,Zr)C with WC-Co
Next Article in Special Issue
On the Selective Laser Melting (SLM) of the AlSi10Mg Alloy: Process, Microstructure, and Mechanical Properties
Previous Article in Journal
Capability Study of Ti, Cr, W, Ta and Pt as Seed Layers for Electrodeposited Platinum Films on γ-Al2O3 for High Temperature and Harsh Environment Applications
Previous Article in Special Issue
Comparison of Maraging Steel Micro- and Nanostructure Produced Conventionally and by Laser Additive Manufacturing
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessFeature PaperArticle
Materials 2017, 10(1), 56; doi:10.3390/ma10010056

Exploiting Process-Related Advantages of Selective Laser Melting for the Production of High-Manganese Steel

1
Department of Ferrous Metallurgy, RWTH Aachen University, 52072 Aachen, Germany
2
Fraunhofer-Institute for Laser Technology ILT, 52074 Aachen, Germany
3
Central Facility for Electron Microscopy, RWTH Aachen University, 52074 Aachen, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Guillermo Requena
Received: 1 December 2016 / Revised: 3 January 2017 / Accepted: 5 January 2017 / Published: 11 January 2017
(This article belongs to the Special Issue Metals for Additive Manufacturing)
View Full-Text   |   Download PDF [11323 KB, uploaded 11 January 2017]   |  

Abstract

Metal additive manufacturing has strongly gained scientific and industrial importance during the last decades due to the geometrical flexibility and increased reliability of parts, as well as reduced equipment costs. Within the field of metal additive manufacturing methods, selective laser melting (SLM) is an eligible technique for the production of fully dense bulk material with complex geometry. In the current study, we addressed the application of SLM for processing a high-manganese TRansformation-/TWinning-Induced Plasticity (TRIP/TWIP) steel. The solidification behavior was analyzed by careful characterization of the as-built microstructure and element distribution using optical and scanning electron microscopy (SEM). In addition, the deformation behavior was studied using uniaxial tensile testing and SEM. Comparison with conventionally produced TRIP/TWIP steel revealed that elemental segregation, which is normally very pronounced in high-manganese steels and requires energy-intensive post processing, is reduced due to the high cooling rates during SLM. Also, the very fast cooling promoted ε- and α’-martensite formation prior to deformation. The superior strength and pronounced anisotropy of the SLM-produced material was correlated with the microstructure based on the process-specific characteristics. View Full-Text
Keywords: additive manufacturing; selective laser melting; steel; twinning; TWIP; martensite; TRIP; microstructure; texture; mechanical properties; anisotropy additive manufacturing; selective laser melting; steel; twinning; TWIP; martensite; TRIP; microstructure; texture; mechanical properties; anisotropy
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Haase, C.; Bültmann, J.; Hof, J.; Ziegler, S.; Bremen, S.; Hinke, C.; Schwedt, A.; Prahl, U.; Bleck, W. Exploiting Process-Related Advantages of Selective Laser Melting for the Production of High-Manganese Steel. Materials 2017, 10, 56.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top