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2010 | OriginalPaper | Buchkapitel

In Situ Study of Phase Transformation in Steel During Welding

verfasst von : Yu-ichi Komizo, Hidenori Terasaki

Erschienen in: In-situ Studies with Photons, Neutrons and Electrons Scattering

Verlag: Springer Berlin Heidelberg

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Abstract

The microstructures of welds are formed through various thermal cycles depending on the details of the welding path, including composition, heat input, post-weld heat treatment and so on. Thus, it is not easy to estimate the process of microstructure formation during the thermal cycle of welding. However, the origin of the microstructure exists at high temperature. For instance, the crystal structure of low carbon steel transforms twice (δ → γ → α) from liquid phase to room temperature. This provides an opportunity to obtain various desirable properties of a weld (the weld metal and the heat-affected zone (HAZ)) through microstructural control. Therefore, understanding the behaviour of phase transformation in the welding process is essential. As these phenomena occur during rapid heating and cooling cycles (several hundred degrees/second) at high temperature, it is not easy to observe the phase transformation during welding in detail.

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Nächstes Kapitel In Situ Studies of Phase Transformation and Residual Stresses in LTT Alloys During Welding Using Synchrotron Radiation

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Elmer JW, Wong J, Ressler T (2001) Spatially resolved X-ray diffraction mapping of phase transformations in the heat-affected zone of carbon-manganese steel arc welds. Metall Mater Trans A 32(5):1175–1187CrossRef

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Terasaki H, Komizo Y, Yonemuira M, Osuki T (2006) Time-resolved in-situ analysis of phase evolution for the directional solidification of carbon steel weld metal. Metall Mater Trans A 37A(4):1261–1266CrossRef

Terasaki H, Yamada T, Komizo Y (2008) Analysis of Inclusion Core under the Weld Pool of High Strength and Low Alloy Steel. ISIJ Int 48(12):1752–1757CrossRef

Terasaki H, Yanagita K, Komizo Y (2009) In-situ Observation of Solidification Behavior of 14Cr-Ni Steel Weld. Q J JWS 27(2):118s–121s

Wong J, Resseler T, Elmer JW (2003) Dynamics of phase transformations and microstructure evolution in carbon-manganese steel arc welds using time-resolved synchrotron X-ray diffraction. J Synch Rad 10(2):154–167CrossRef

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Yonemura M, Komizo Y, Toyokawa H (2005) Development of In Situ Observation Technique on Solidification Structure of Weld Metals by X-Ray Diffraction. SPring 8 Research Frontier, 129–130

Yonemura M, Osuki T, Terasaki H, Komizo Y, Sato M, Kitano A (2006a) In-situ observation for weld solidification in stainless steels using time-resolved X-ray diffraction. Mater Trans JIM 47(2):310–316CrossRef

Yonemura M, Osuki T, Terasaki H, Komizo Y, Sato M, Toyokawa H (2006b) Two-dimensional time-resolved X-ray diffraction study of directional solidification in steels. Mater Trans JIM 47(9):2292–2298CrossRef

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Zhang D, Terasaki H, Komizo Y (2010) Morphological and crystallographic evolution of bainite transformation in Fe-0.15C binary alloy. Microsc Res Tech 73(1):67–70CrossRef

Titel: In Situ Study of Phase Transformation in Steel During Welding
verfasst von: Yu-ichi Komizo
Hidenori Terasaki
Verlag: Springer Berlin Heidelberg
Buch: In-situ Studies with Photons, Neutrons and Electrons Scattering
Print ISBN: 978-3-642-14793-7

Electronic ISBN: 978-3-642-14794-4

Copyright-Jahr: 2010
DOI: https://doi.org/10.1007/978-3-642-14794-4_1

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