The Study on the Process and Mechanism of Explosive Hardening of Hadfield Steel by a New Flexible Explosive

Abstract:

The process of explosive hardening of hadfield steel by a new flexible explosive was researched, and the change of hadfiled steel metallurgical structure was observed. The results show that: 1. Three times of explosive hardening by using 3mm explosive fill the demands of process (the surface hardness above 350HB,the hardening depth above 20mm,the sinkage below1.2mm and no crack in the surface);2. The hardness increment is decrease with explosive times increasing, and the hardness increment increase with the sinkage increasing;3.The internal hardness of the unprocessed hadfield steel is invariable basically, and the surface hardness is slightly fewer; the hardness of the hadfield steel hardening three times plunges largely when depth form 0mm to 2mm, and decreases gradually under 2mm.4.Grain refining, multiplication of dislocation and grain boundary sliding lead to the hardening of hadfield steel.

• Periodical: Advanced Materials Research (Volumes 834-836)
• Pages: 654-657
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.834-836.654
• Online since: October 2013
• Authors: Feng Ying Wang, Xue Hao Gao, Tian Sheng Liu
• Keywords: Explosive Hardening, Flexible Explosive, Hadfield Steel, Metallurgical Structure

References

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