In Situ Observation Method for Quantitative Evaluation of Solidification Phenomena and Solidification Cracks during Welding

Kenji Shinozaki; Motomichi Yamamoto; Kohta Kadoi; Peng Wen

doi:10.4028/www.scientific.net/MSF.782.3

Paper Titles

Preface, Organizing Committee and Acknowledgment

In Situ Observation Method for Quantitative Evaluation of Solidification Phenomena and Solidification Cracks during Welding
p.3

Investigations on Microstructure Effect of Changing Fluid Flow Characteristic in High Pressure Die Casting
p.8

Effect of Sample Mount on Active Screen Plasma Duplex Processing
p.16

Magnetic and Martensitic Transformations in Ni₄₆Mn_41.5-xFe_xSn_12.5 Melt Spun Ribbons
p.23

Modern Self-Lubricating Coatings for Automotive, Aviation and Spacecraft Industry
p.31

Evaluation of Grain Deformation in Polycrystals
p.41

Prediction of Ternary Fe-B-Cr Phase Diagram
p.45

Non-Traditional Use of Torsion Plastometer in Physical Simulation of Steel Production
p.51

HomeMaterials Science ForumMaterials Science Forum Vol. 782In Situ Observation Method for Quantitative...

In Situ Observation Method for Quantitative Evaluation of Solidification Phenomena and Solidification Cracks during Welding

Abstract:

Solidification cracking during welding is very serious problem for practical use. Therefore, there are so many reports concerning solidification cracking. Normally, solidification cracking susceptibility of material is quantitatively evaluated using Trans-Varestraint test. On the other hand, local solidification cracking strain was tried to measure precisely using in-situ observation method, called MISO method about 30 years ago. Recently, digital high-speed video camera develops very fast and its image quality is very high. Therefore, we have started to observe solidification crack using in site observation method. In this paper, the local critical strain of a solidification crack was measured and the high temperature ductility curves of weld metals having different dilution ratios and different grain sizes to evaluate quantitatively the effects of dilution ratio and grain size on solidification cracking susceptibility by using an improved in situ observation method.

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Periodical:

Materials Science Forum (Volume 782)

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3-7

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https://doi.org/10.4028/www.scientific.net/MSF.782.3

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Online since:

April 2014

Authors:

Kenji Shinozaki*, Motomichi Yamamoto, Kohta Kadoi, Peng Wen

Keywords:

In Situ, Laser Welding, Solidification Crack

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