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Ericsson, Torsten
Publications (10 of 29) Show all publications
Ericsson, T. (2014). Residual Stresses Produced by Quenching of Martensitic Steels. In: Comprehensive Materials Processing: (pp. 271-298). Elsevier
Open this publication in new window or tab >>Residual Stresses Produced by Quenching of Martensitic Steels
2014 (English)In: Comprehensive Materials Processing, Elsevier, 2014, p. 271-298Chapter in book (Other academic)
Place, publisher, year, edition, pages
Elsevier, 2014
National Category
Materials Engineering
Identifiers
urn:nbn:se:liu:diva-110585 (URN)9780080965321 (ISBN)
Available from: 2014-09-15 Created: 2014-09-15 Last updated: 2014-10-09
Stekovic, S. & Ericsson, T. (2007). Influence of Long Term Aging on Microstructure and Low Cycle Fatigue Behaviour of Two Coated Nickel-Base Superalloys.
Open this publication in new window or tab >>Influence of Long Term Aging on Microstructure and Low Cycle Fatigue Behaviour of Two Coated Nickel-Base Superalloys
2007 (English)Manuscript (preprint) (Other academic)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-14667 (URN)
Available from: 2007-10-12 Created: 2007-10-12 Last updated: 2013-10-31
Stekovic, S., Moverare, J. & Ericsson, T. (2007). Low Cycle Fatigue, Thermo-Mechanical Fatigue and Failure of an Uncoated and Coated Polycrystalline Nickel-Base Superalloy IN792. Metallurgical and Materials Transactions. A
Open this publication in new window or tab >>Low Cycle Fatigue, Thermo-Mechanical Fatigue and Failure of an Uncoated and Coated Polycrystalline Nickel-Base Superalloy IN792
2007 (English)In: Metallurgical and Materials Transactions. A, ISSN 1073-5623, E-ISSN 1543-1940Article in journal (Refereed) Submitted
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-14666 (URN)
Available from: 2007-10-12 Created: 2007-10-12 Last updated: 2017-12-13
Stekovic, S. & Ericsson, T. (2007). Low-Cycle Fatigue and Damage of an Uncoated and Coated Single Crystal Nickel-Bse Superalloy SCB. International Journal of Materials Research, 98(1), 26-32
Open this publication in new window or tab >>Low-Cycle Fatigue and Damage of an Uncoated and Coated Single Crystal Nickel-Bse Superalloy SCB
2007 (English)In: International Journal of Materials Research, ISSN 1862-5282, Vol. 98, no 1, p. 26-32Article in journal (Refereed) Published
Abstract [en]

This paper presents low-cycle fatigue (LCF) behaviour and damage mechanisms of uncoated and coated specimens of a single crystal nickel-base superalloy SCB tested at 500°C and 900°C. Four coatings were deposited on the base material, an overlay coating AMDRY997, a platinum-modified aluminide diffusion coating RT22 and two innovative coatings called IC1 and IC3 with a NiWdiffusion barrier in the interface. AMDRY997 and RT22 were used as reference coatings. The LCF tests were performed at three strain amplitudes, 1.0, 1.2 and 1.4%, with R ¼ % 1, in laboratory air and without any dwell time. The LCF life of the specimens is determined by crack initiation and propagation. Crack data are presented for different classes of crack size in the form of crack density, that is, the number of cracks normalised to the investigated interface length. Micrographs of damage of the coatings are also shown.

The effect of the coatings on the LCF life of the superalloy was dependent on the test temperature and deposited coating. At 500°C all coatings had a detrimental effect on the LCF life of the superalloy. At 900°C both AMDRY997 and IC1 prolonged the fatigue life of the superalloy by factors ranging between 1.5 and 4 while RT22 and IC3 shortened the life of the coating–substrate system. Specimens coated with RT22 exhibited generally more damage than other tested coatings at 9008 C. Most of the cracks observed initiated at the coating surface and a majority were arrested in the interdiffusion zone between the base material and the coating. No topologically close-packed phases were found. Delamination was only found in AMDRY997 at higher strains. Surface roughness or rumpling was found in the overlay coating AMDRY997 with some cracks initiating from the rumples. The failure morphology at 900°C reflected the role of oxidation in the fatigue life, the crack initiation and propagation of the coated specimens. The wake of the cracks grown into the substrate was severely oxidised leading to the loss of Al and Ti to the oxide and resulting in the formation of a ϒ’ depleted zone. The cracks grew more or less perpendicular to the load axis in a Stage II manner.

 

National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-14664 (URN)
Available from: 2007-10-12 Created: 2007-10-12 Last updated: 2009-05-14
Stekovic, S. & Ericsson, T. (2007). Thermo-Mechanical and Low Cycle Fatigue of Two Uncoated and Coated Single Crystal Nickel-Base Superalloys, CMSX-4 and SCB. In: Fatigue 2007 - The 6th Engineering Integrity Society International Conference on Durability and Fatigue,2007.
Open this publication in new window or tab >>Thermo-Mechanical and Low Cycle Fatigue of Two Uncoated and Coated Single Crystal Nickel-Base Superalloys, CMSX-4 and SCB
2007 (English)In: Fatigue 2007 - The 6th Engineering Integrity Society International Conference on Durability and Fatigue,2007, 2007Conference paper, Published paper (Other academic)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-34140 (URN)20915 (Local ID)20915 (Archive number)20915 (OAI)
Available from: 2009-10-10 Created: 2009-10-10
Stekovic, S., Ericsson, T. & Johansson, S. (2006). Comparison of Low-Cycle Fatigue Properties of Two Coated Single Crystal Nickel-Base Superalloys, CMSX-4 and SCB. In: 9th International Fatigue Congress: .
Open this publication in new window or tab >>Comparison of Low-Cycle Fatigue Properties of Two Coated Single Crystal Nickel-Base Superalloys, CMSX-4 and SCB
2006 (English)In: 9th International Fatigue Congress, 2006Conference paper, Published paper (Refereed)
Series
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-14665 (URN)
Available from: 2007-10-12 Created: 2007-10-12 Last updated: 2009-06-04
Ericsson, T. (2005). Laser coating technologies (2ed.). In: Jian Lu (Ed.), Handbook on residual stress. Vol. 1: Residual stress: manufacturing and materials processing.
Open this publication in new window or tab >>Laser coating technologies
2005 (English)In: Handbook on residual stress. Vol. 1: Residual stress: manufacturing and materials processing / [ed] Jian Lu, 2005, 2Chapter in book (Other academic)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-30016 (URN)15461 (Local ID)978-0-912053-91-2 (ISBN)978-0-912053-93-6 (ISBN)15461 (Archive number)15461 (OAI)
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2013-11-28Bibliographically approved
Peng, R., Johansson, S., Ericsson, T. & Thorsson, L. (2005). Residual Stresses Induced by Laser FreeForm Fabrication. Materials Science Forum, 490-491, 334-339
Open this publication in new window or tab >>Residual Stresses Induced by Laser FreeForm Fabrication
2005 (English)In: Materials Science Forum, ISSN 0255-5476, E-ISSN 1662-9752, Vol. 490-491, p. 334-339Article in journal (Refereed) Published
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-24353 (URN)6443 (Local ID)6443 (Archive number)6443 (OAI)
Available from: 2009-10-07 Created: 2009-10-07 Last updated: 2017-12-13
Bacos, M. P., Josso, P., Vialas, N., Poquillon, D., Pieraagi, B., Monceau, D., . . . Stekovic, S. (2004). ALLBATROS advanced long life blade turbine coating systems. Applied Thermal Engineering, 24(11-12), 1745-1753
Open this publication in new window or tab >>ALLBATROS advanced long life blade turbine coating systems
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2004 (English)In: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 24, no 11-12, p. 1745-1753Article in journal (Refereed) Published
Abstract [en]

The scientific and technological objectives of this program are to increase the efficiency, reliability and maintainability of industrial gas turbine blades and vanes by

• developing coatings that can warrant a 50 000 h life, i.e. twice that of the usual life, of the hot components (800–1100 °C) even with the use of renewable fuels such as biomass gas or recovery incinerator gas i.e. low-grade fuels with high pollutant levels,

• characterising advanced existing coatings to assess lifetime and performance of coatings and coated materials,

• providing material coating data and design criteria to use coating as a design element,

• increasing the fundamental understanding of the behaviour of coated materials, their degradation, fracture mechanisms and engineering because of the strong need for a mechanism-based modelling of durability.

These programmes permitted the selection of two reference coatings and the development of two innovative coatings. Concurrently work has been done in order to develop corrosion, oxidation and thermo-mechanical property models. Correlations between coatings development, experimental results and calculations will be discussed.

Keywords
MCrAlY, Aluminium, Oxidation, Corrosion, Thermo-mechanics, Turbine
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-22775 (URN)10.1016/j.applthermaleng.2003.11.018 (DOI)000222717900018 ()2106 (Local ID)2106 (Archive number)2106 (OAI)
Available from: 2009-10-07 Created: 2009-10-07 Last updated: 2017-12-13
Peng, R., Ericsson, T., Johansson, S. & Thorsson, L. (2004). Residual Stresses in Metallic Samples Produced byh Laser FreeForm Fabrication. In: 10th Swedish Neutron Scattering Society Meeting,2004.
Open this publication in new window or tab >>Residual Stresses in Metallic Samples Produced byh Laser FreeForm Fabrication
2004 (English)In: 10th Swedish Neutron Scattering Society Meeting,2004, 2004Conference paper, Published paper (Other academic)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-23546 (URN)3018 (Local ID)3018 (Archive number)3018 (OAI)
Available from: 2009-10-07 Created: 2009-10-07
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