In Situ Observation of Solidification Behavior in a Q235 Steel by Using Electric Pulse Modification

Abstract:

In the unmodified and EP-modified melt of Q235 steel, the solidification behavior including the nucleation and growth of crystals has been observed in situ by use of a confocal scanning laser microscope combined with an infrared image furnace, and meanwhile, described the characteristic of phase transformation. The result shows that the every stage of phase transformation is advanced; the phase transformation time is shortened, and temperature is reduced during heating proceeds. On the other hand, it can be observed that the nucleation density of solid phase increases and has an even distribution among the liquid phase.

• Periodical: Advanced Materials Research (Volumes 299-300)
• Pages: 269-272
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.299-300.269
• Online since: July 2011
• Authors: Shan Dai, Jin Gang Qi, Zuo Fu Zhao, Jian Zhong Wang
• Keywords: Confocal Laser Scanning Microscopy (CLSM), Electric Pulse Modification (EPM), Molten Q235 Steel, Nucleation, Phase Transformation

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