The Interface Morphology of Thixo-Joined Cold Work Tool Steel

M.N. Mohammed; Mohammed Zaidi Omar; Junaidi Syarif; Zainuddin Sajuri; Mohd Shukor Salleh; Khaled S. Alhawari

doi:10.4028/www.scientific.net/AMM.663.276

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 663The Interface Morphology of Thixo-Joined Cold Work...

The Interface Morphology of Thixo-Joined Cold Work Tool Steel

Abstract:

Cold-work tool steel is considered to be a nonweldable metal due to its high percentage content of carbon and alloying elements. The application of a new process of the semi-solid joining of two parts of AISI D2 cold-work tool steel is proposed using a partial remelting method. Samples were heated in an argon atmosphere up to 1275°C which corresponded to about 20% of liquid fraction and held for 10 minutes. Metallographic analyses along the joint interface showed a smooth transition from one to the other and neither oxides nor micro-cracking was observed. The current work successfully confirmed that avoidance of a dendritic microstructure in the semi-solid joined zone and high bonding quality components can be achieved without the need for force or complex equipment when compared to conventional welding processes.

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Periodical:

Applied Mechanics and Materials (Volume 663)

Pages:

276-280

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.663.276

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Online since:

October 2014

Authors:

M.N. Mohammed, Mohammed Zaidi Omar, Junaidi Syarif, Zainuddin Sajuri, Mohd Shukor Salleh, Khaled S. Alhawari

Keywords:

Cold-Work Tool Steel, Direct Partial Remelting, Thixo-Joining

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References

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