Microstructural properties of semisolid welded joints for AISI D2 Tool Steel

• Main Authors: Mohammed, M.N., Omar, M.Z., Syarif, J., Sajuri, Z., Salleh, M.S., Alhawari, K.S.
• Format: Article
• Language: English
• Published: Fakulti Kejuruteraan ,UKM,Bangi. 2014
• Online Access: http://journalarticle.ukm.my/8522/1/345-469-1-SM.pdf; http://journalarticle.ukm.my/8522/; http://www.ukm.my/jkukm/index.php/jkukm/issue/view/36

The aim of this study is to investigate experimentally the microstructural evolution of the joints using ledeburitic AISI D2 Tool Steel parts. The application of a new process of the semisolid 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 1300°C and held for 10 minutes. Metallographic analyses along the joint interface showed a smooth transition from one to the other and neither oxides nor microcracking was observed. The current work successfully confi rmed that avoidance of a dendritic microstructure in the semisolid joined zone and high bonding quality components can be achieved without the need for force or complex equipment when compared to conventional welding processes.