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WANG Zheng, GUI Chibin, WANG Yuhua. Effect of Ti content on microstructure toughness of deposited metal with flux cored wire[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (11): 109-112.
Citation: WANG Zheng, GUI Chibin, WANG Yuhua. Effect of Ti content on microstructure toughness of deposited metal with flux cored wire[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (11): 109-112.
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Effect of Ti content on microstructure toughness of deposited metal with flux cored wire

  • 1.

    College of Naval Architecture & Power, Naval University of Engineering, Wuhan 430033, China

  • 2.

    Naval Military Delegation Room of 407 Factory, Luoyang 471039, Henan, China

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  • Received Date: March 09, 2009
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  • The effects of Ti content on microstructure characteristic of deposited metal with flux cored wire were investigated with different contents of Ti-Fe powder under the protection of CO2 and Ar+20%CO2.The results show that the inclusions in deposited metal are mainly complex oxides composed of MnO-TiOx-Al2O3-SiO2 in Si-Mn-Ti deoxidized flux cored wire.With the increasing of Ti content in flux cored wire, the content of Ti in the inclusions increases, and most of inclusions are in the range of 0.3~2.0 μm in diameter, which promote the formation of acicular ferrite, thus those contribute to the increased toughness of deposited metal.Dissociative Ti can improve the intensity and the rigidity of microstructure, but it does worse to the microstructure toughness when too much dissociative Ti gets into the microstructure of deposited metal.
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