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Manitsas, Dimosthenis
Publications (3 of 3) Show all publications
Manitsas, D. & Andersson, J. (2018). Hot Cracking Mechanisms in Welding Metallurgy: A Review of Theoretical Approaches. Paper presented at 5th International Conference of Engineering Against Failure, ICEAF-V 2018, 20 June 2018 through 22 June 2018. MATEC Web of conferences, 188, Article ID 03018.
Open this publication in new window or tab >>Hot Cracking Mechanisms in Welding Metallurgy: A Review of Theoretical Approaches
2018 (English)In: MATEC Web of conferences, E-ISSN 2261-236X, Vol. 188, article id 03018Article in journal (Refereed) Published
Abstract [en]

Hot cracking often refers to the appearance of liquid films along grain boundaries or to another place in the weld metal structure. Despite hot cracking importance in alloy weldability, there is limited understanding of the influencing mechanisms. Theories and criteria worked out over the years to assess alloy weldability will be presented. The review focuses on: 1) Theories of hot cracking, 2) Hot cracking criteria, and 3) A criticism of hot cracking theories and criteria.

Place, publisher, year, edition, pages
EDP Sciences, 2018
Keywords
Grain boundaries, Liquid films, Weldability, Hot cracking, Influencing mechanisms, Of liquid films, Theoretical approach, Weld metal, Welding metallurgy, Electric arc welding
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering; Production Technology
Identifiers
urn:nbn:se:hv:diva-12976 (URN)10.1051/matecconf/201818803018 (DOI)2-s2.0-85053214148 (Scopus ID)
Conference
5th International Conference of Engineering Against Failure, ICEAF-V 2018, 20 June 2018 through 22 June 2018
Available from: 2018-10-26 Created: 2018-10-26 Last updated: 2019-05-29Bibliographically approved
Markocsan, N., Manitsas, D., Jiang, J. & Björklund, S. (2017). MAX-phase coatings produced by thermal spraying. Journal of Superhard Materials, 39(5), 355-364
Open this publication in new window or tab >>MAX-phase coatings produced by thermal spraying
2017 (English)In: Journal of Superhard Materials, ISSN 1063-4576, Vol. 39, no 5, p. 355-364Article in journal (Refereed) Published
Abstract [en]

This paper presents a comparative study on the Ti2AlC coatings produced by different thermal spray methods, as Ti2AlC is one of the most studied materials from the MAX-phase family. Microstructural analysis of coatings produced by High Velocity Air Fuel (HVAF), Cold Spray and High Velocity Oxygen Fuel (HVOF) has been carried out by means of the scanning electron microscopy equipped with an energy dispersive spectrometer (EDS). The volume fraction of porosity was determined using the ASTM standard E562. The phase characterization of the as-received powder and as-sprayed coatings was conducted using the X-ray diffraction with CrKα radiation. Impact of the spray parameters on the porosity and the mechanical properties of the coatings are discussed. The results show that the spraying temperature and velocity play a crucial role in coatings characteristics. © 2017, Allerton Press, Inc.

Place, publisher, year, edition, pages
Allerton Press, 2017
Keywords
Air; Aluminum compounds; Coatings; Electron microscopy; Fuels; HVOF thermal spraying; Porosity; Powder coatings; Scanning electron microscopy; Spectrometers; Thermal spraying; Titanium compounds; Velocity; X ray diffraction, Cold spray; Energy dispersive spectrometers; High velocity air fuels; High velocity oxygen fuel(HVOF); MAX-phase; Microstructural analysis; Phase characterization; Spraying temperatures, Sprayed coatings
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering; Production Technology
Identifiers
urn:nbn:se:hv:diva-11918 (URN)10.3103/S1063457617050082 (DOI)000415865800008 ()2-s2.0-85035125620 (Scopus ID)
Note

First Online: 03 November 2017

Available from: 2017-12-13 Created: 2017-12-13 Last updated: 2019-05-23Bibliographically approved
Markocsan, N., Manitsas, D., Nicholas, C. & Björklund, S. (2016). MAX-phase coatings produced by thermal spraying. In: The 7th International Swedish Production Symposium, SPS16, Conference Proceedings: 25th – 27th of October 2016. Paper presented at 7th International Swedish Production Symposium, SPS16, Lund, Sweden, October 25–27, 2016 (pp. 1-8). Lund: Swedish Production Academy
Open this publication in new window or tab >>MAX-phase coatings produced by thermal spraying
2016 (English)In: The 7th International Swedish Production Symposium, SPS16, Conference Proceedings: 25th – 27th of October 2016, Lund: Swedish Production Academy , 2016, p. 1-8Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents a comparative study on Ti2AlC coatings produced by different thermal spray methods, as Ti2AlC is one of the most studied materials from the MAX phase family. Microstructural analysis on coatings produced by High Velocity Air Fuel (HVAF), Cold Spray and High Velocity Oxygen Fuel (HVOF) has been carried out by means of scanning electron microscopy equipped with energy dispersive spectrometer (EDS). The volume fraction of porosity was determined using the ASTM standard E562. The phase characterization of the as-received powder and the as-sprayed coatings was conducted using X-ray diffraction with Cr Kα radiation. Impact of spray parameters on the porosity and the mechanical properties of the coatings are also discussed. The results show that the spraying temperature and velocity plays a crucial role on coatings characteristics.

Place, publisher, year, edition, pages
Lund: Swedish Production Academy, 2016
Keywords
MAX-Phase, High Velocity Air Fuel (HVAF), High Velocity Oxygen Fuel (HVOF), Cold Spray, Scanning Electron Microscopy (SEM)
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering; Production Technology
Identifiers
urn:nbn:se:hv:diva-10245 (URN)
Conference
7th International Swedish Production Symposium, SPS16, Lund, Sweden, October 25–27, 2016
Available from: 2016-12-07 Created: 2016-12-07 Last updated: 2019-03-15Bibliographically approved
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