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Alloys, Volume 1, Issue 3

2022 December - 6 articles

Cover Story: Crack-free LPBF samples with a relative density of >99.9 % were processed from pre-alloyed AlMgSi1Zr (AA6182 series alloy) powder, to which 0.5 wt.-% Zr and 0.5 wt.-% Ti were added via mechanical mixing. No hot cracks were found in the µCT scans. Moreover, a fully equiaxed microstructure with a mean size of 1.2 µm for the Al grains was observed in the as-built parts. In TEM characterization, Al3(Zr,Ti) particles were observed, acting as efficient heterogeneous grain refiners for Al by building a semi-coherent interface. Unmolten Ti and Zr particles with sizes up to 80 µm were found in the Al phase. The resulting fine-grained microstructure led to a tensile strength of 329 ± 4 MPa and a total elongation at a break of 11.4 ± 0.9 % after solution heat treatment, quenching in water and subsequent artificial ageing. View this paper
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Articles (6)

  • Article
  • Open Access
2 Citations
3,100 Views
10 Pages

13 December 2022

FeSiCr alloys are used as soft magnetic materials for power multilayer inductors. The alloys are typically annealed at intermediate temperatures in air during inductor fabrication to form an insulating chromium oxide layer around the alloy particles....

  • Article
  • Open Access
4 Citations
3,668 Views
11 Pages

Processing of Aluminum Alloy 6182 with High Scanning Speed in LPBF by In-Situ Alloying with Zr and Ti Powder

  • Kirstin Riener,
  • Alexander Nagler,
  • Ilse Letofsky-Papst and
  • Gerhard Leichtfried

8 December 2022

The demand for high-strength aluminum alloys for the laser powder bed fusion (LPBF) process is still growing. However, to date, the crack susceptibility of conventional alloys as well as the high prices for specially developed alloys are the main obs...

  • Article
  • Open Access
4 Citations
4,109 Views
14 Pages

Relationship between Microstructure, Mechanical Properties and Creep Behavior of a Cr-Rich Ferritic Stainless Steel Produced by Laser Powder Bed Fusion

  • Dennis Karlsson,
  • Thomas Helander,
  • Eleonora Bettini,
  • Carl-Johan Hassila,
  • Johan Cedervall,
  • Martin Sahlberg,
  • Peter Harlin and
  • Ulf Jansson

5 December 2022

Additive manufacturing (AM) techniques such as laser powder bed fusion (L-PBF) are rapidly growing due to the inherent design freedom and possibilities to produce components not available with other techniques. This could be utilized in, e.g., the de...

  • Article
  • Open Access
1 Citations
2,974 Views
9 Pages

Magnetic, Thermal, and Transport Properties of Co2Ti1.5Sn0.5 Heusler Alloy

  • Sunitha Raveendran Athul,
  • Kumar Arun,
  • Saktivel Swathi,
  • Uralath Dhanavardhanan Remya,
  • Andrea Dzubinska,
  • Marian Reiffers and
  • Ramamoorti Nagalakshmi

30 November 2022

In this work, the structural, magnetic, thermal, and transport properties of the arc-melted polycrystalline Heusler alloy Co2Ti1.5Sn0.5 are investigated. The alloy crystallizes in an L21 structure with a space group of Fm-3m. The magnetic properties...

  • Feature Paper
  • Article
  • Open Access
4 Citations
3,120 Views
11 Pages

Anomalous Work Hardening Behavior of a Single Crystalline Co-Base Superalloy

  • Andreas Bezold,
  • Nicklas Volz,
  • Fei Xue,
  • Mathias Göken and
  • Steffen Neumeier

29 October 2022

The defect evolution associated with an anomalous work hardening behavior of a single crystalline quaternary Co-Al-W-Ta superalloy at 950 °C was investigated by transmission electron microscopy. As plastic deformation is initially confined to the...

  • Article
  • Open Access
4 Citations
3,737 Views
11 Pages

21 September 2022

Titanium alloys are ideal for a great range of engineering applications; however, their high manufacturing costs hinder their widespread use. This study investigates the relationship between the processing and properties of representative Ti-based ma...

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Alloys - ISSN 2674-063X