《Table 1 Main chemical composition of BW300TP》

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《Numerical simulation of temperature field in laser-arc hybrid welding of wear-resistant steel》

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For the experiment，4.5-mm-thick high-strength w ear-resistant steel BW300TP w as selected as the test parent material.Hot rolling w as used as the supply state.The steel microstructure comprises ferrite and martensite，as show n in Fig.1.The size of the w ork-piece after cutting w as 400 mm×150 mm×4.5 mm，and the composition and tensile properties of the base material are listed in Tables 1and 2.