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Publications (6 of 6) Show all publications
Chen, X., Vuorinen, E. & Grahn, J. (2009). In-situ SEM observation on fracture behavior of austempered silicon alloyed steel (ed.). Paper presented at . China Foundry, 6(3), 185-190
Open this publication in new window or tab >>In-situ SEM observation on fracture behavior of austempered silicon alloyed steel
2009 (English)In: China Foundry, ISSN 1672-6421, Vol. 6, no 3, p. 185-190Article in journal (Refereed) Published
Abstract [en]

Crack initiation, propagation and microfracture processes of austempered high silicon cast steel have been investigated by using an in-situ tensile stage installed inside a scanning electron microscope chamber. It is revealed that micro cracks always nucleate at the yielding near imperfections and the boundary of matrix-inclusions due to the stress concentration. There are four types of crack propagations in the matrix: crack propagates along the boundary of two clusters of bainitic ferrite; crack propagates along the boundary of ferrite-austenite in bainitic ferrite laths; crack propagates into bainitic ferrite laths; crack nucleates and propagates in the high carbon brittle plate shape martensite which is transformed from some blocky retained austenite due to plastic deformation. Based on the observation and analysis of microfracture processes, a schematic diagram of the crack nucleation and propagation process of high silicon cast steel is proposed.

Keywords
Technology - Materials science, Teknikvetenskap - Teknisk materialvetenskap
National Category
Other Materials Engineering
Research subject
Engineering Materials
Identifiers
urn:nbn:se:ltu:diva-3096 (URN)0e196980-b4aa-11de-b769-000ea68e967b (Local ID)0e196980-b4aa-11de-b769-000ea68e967b (Archive number)0e196980-b4aa-11de-b769-000ea68e967b (OAI)
Note
Godkänd; 2009; 20091009 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-06-13Bibliographically approved
Kaplan, A., Åberg, G., Grahn, J., Koh, Y. & Powell, J. (2006). Cleaning oxides from metal artifacts using a frequency-doubled Nd:YAG laser (ed.). In: (Ed.), Milan Brandt (Ed.), Peer reviewed conference proceedings: PICALO 2006, 2nd Pacific International Conference on Applications of Lasers and Optics : April 3 - 5, 2006, Grand Hyatt Melbourne, Melbourne, Australia. Paper presented at Pacific International Conference on Applications of Lasers and Optics : 03/04/2006 - 05/04/2006 (pp. 305-310). Orlando, Fla.: Laser institute of America
Open this publication in new window or tab >>Cleaning oxides from metal artifacts using a frequency-doubled Nd:YAG laser
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2006 (English)In: Peer reviewed conference proceedings: PICALO 2006, 2nd Pacific International Conference on Applications of Lasers and Optics : April 3 - 5, 2006, Grand Hyatt Melbourne, Melbourne, Australia / [ed] Milan Brandt, Orlando, Fla.: Laser institute of America , 2006, p. 305-310Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents the results of an experimental program investigating the ablation of oxides from copper alloy surfaces using a frequency doubled Nd:YAG laser. A collection of coins with similar levels of surface oxidation were cleaned using range of laser pulsing parameters on dry, wet and submerged surfaces. It was discovered that laser cleaning was always associated with one of two types of coin surface damage. At higher powers the damage took the form of surface melting and at lower powers the incident laser beam converted the original oxide layer into adherent droplets of molten metal

Place, publisher, year, edition, pages
Orlando, Fla.: Laser institute of America, 2006
National Category
Manufacturing, Surface and Joining Technology
Research subject
Manufacturing Systems Engineering
Identifiers
urn:nbn:se:ltu:diva-39068 (URN)da98efb0-dd36-11db-9cae-000ea68e967b (Local ID)0-912035-846 (ISBN)da98efb0-dd36-11db-9cae-000ea68e967b (Archive number)da98efb0-dd36-11db-9cae-000ea68e967b (OAI)
Conference
Pacific International Conference on Applications of Lasers and Optics : 03/04/2006 - 05/04/2006
Note
Godkänd; 2006; 20070328 (cira)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2018-06-13Bibliographically approved
Olsson, T., Backman, A., Grahn, J., Oksman, K. & Lindberg, H. (1998). A method of measuring the fibril angle in softwood by using scanning electron microscopy (ed.). In: (Ed.), (Ed.), Book of abstracts / Tenth International Conference Mechanics of Composite Materials : April 20 - 23, 1998, Riga, Latvia: . Paper presented at International Conference Mechanics of Composite Materials : 20/04/1998 - 23/04/1998.
Open this publication in new window or tab >>A method of measuring the fibril angle in softwood by using scanning electron microscopy
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1998 (English)In: Book of abstracts / Tenth International Conference Mechanics of Composite Materials : April 20 - 23, 1998, Riga, Latvia, 1998Conference paper, Meeting abstract (Other academic)
National Category
Other Materials Engineering Bio Materials
Research subject
Engineering Materials; Wood and Bionanocomposites
Identifiers
urn:nbn:se:ltu:diva-32512 (URN)707ae040-93a9-11dd-a897-000ea68e967b (Local ID)707ae040-93a9-11dd-a897-000ea68e967b (Archive number)707ae040-93a9-11dd-a897-000ea68e967b (OAI)
Conference
International Conference Mechanics of Composite Materials : 20/04/1998 - 23/04/1998
Note
Godkänd; 1998; 20081006 (cira)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-06-13Bibliographically approved
Lindberg, K., Lindgren, O. & Grahn, J. (1996). Fast water paths through latex paint films (ed.). In: (Ed.), Christer Sjöström (Ed.), Durability of Building Materials and Components 7: proceedings of the seventh International Conference on Durability of Building Materials and Components, 7DBMC, Stockholm, Sweden, 19-23 May 1996. Paper presented at International Conference on Durability of Building Materials and Components : 19/05/1996 - 23/05/1996 (pp. 667-672). London: Taylor and Francis Group
Open this publication in new window or tab >>Fast water paths through latex paint films
1996 (English)In: Durability of Building Materials and Components 7: proceedings of the seventh International Conference on Durability of Building Materials and Components, 7DBMC, Stockholm, Sweden, 19-23 May 1996 / [ed] Christer Sjöström, London: Taylor and Francis Group , 1996, p. 667-672Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
London: Taylor and Francis Group, 1996
National Category
Other Mechanical Engineering Other Materials Engineering
Research subject
Wood Technology; Engineering Materials
Identifiers
urn:nbn:se:ltu:diva-37915 (URN)c1aec6f0-fd66-11db-b816-000ea68e967b (Local ID)0-419-20690-6 (ISBN)c1aec6f0-fd66-11db-b816-000ea68e967b (Archive number)c1aec6f0-fd66-11db-b816-000ea68e967b (OAI)
Conference
International Conference on Durability of Building Materials and Components : 19/05/1996 - 23/05/1996
Note
Godkänd; 1996; 20070508 (cira)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2018-06-13Bibliographically approved
Lindberg, H., Grahn, J., Lindgren, O. & Hellgren, A.-C. (1996). Water diffusion through acrylate latex paint films measured by computed tomography (ed.). In: (Ed.), J.L. Sandoz (Ed.), Proceedings / 10th International Symposium on Nondestructive Testing of Wood: Lausanne, Switzerland, August 26-27-28, 1996. Paper presented at International Symposium on Nondestructive Testing of Wood : 26/08/1996 - 28/08/1996. Lausanne: Swiss Federal Institute of Technology
Open this publication in new window or tab >>Water diffusion through acrylate latex paint films measured by computed tomography
1996 (English)In: Proceedings / 10th International Symposium on Nondestructive Testing of Wood: Lausanne, Switzerland, August 26-27-28, 1996 / [ed] J.L. Sandoz, Lausanne: Swiss Federal Institute of Technology , 1996Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
Lausanne: Swiss Federal Institute of Technology, 1996
National Category
Other Materials Engineering Other Mechanical Engineering
Research subject
Engineering Materials; Wood Technology
Identifiers
urn:nbn:se:ltu:diva-40472 (URN)f9f6ee10-fd67-11db-b816-000ea68e967b (Local ID)2-88074-325-7 (ISBN)f9f6ee10-fd67-11db-b816-000ea68e967b (Archive number)f9f6ee10-fd67-11db-b816-000ea68e967b (OAI)
Conference
International Symposium on Nondestructive Testing of Wood : 26/08/1996 - 28/08/1996
Note
Godkänd; 1996; 20070508 (cira)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2018-06-13Bibliographically approved
Grahn, J. & Lindberg, H. (1993). Porositet i färg på trä: provberednings- och svepelektronmikroskopiteknik (ed.). Paper presented at .
Open this publication in new window or tab >>Porositet i färg på trä: provberednings- och svepelektronmikroskopiteknik
1993 (Swedish)Report (Other academic)
National Category
Other Materials Engineering
Research subject
Engineering Materials
Identifiers
urn:nbn:se:ltu:diva-23593 (URN)7a05c030-c5d7-11dc-af05-000ea68e967b (Local ID)7a05c030-c5d7-11dc-af05-000ea68e967b (Archive number)7a05c030-c5d7-11dc-af05-000ea68e967b (OAI)
Note
Godkänd; 1993; 20080118 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-06-13Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-5155-7701

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