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Quantitative investigation of influence of Al2O3 non-metallic inclusions on bending strength of powder metallurgy highspeed steel

Qipeng Hu,Yunbo Chen,Miaohui Wang,Xueyuan Ge,Hengsan Liu,Lingli Zuo,Dongyue Zhang

Journal of Physics: Conference Series（2022）

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Abstract
Abstract The types, dimensions and quantities of inclusions have been examined to quantitatively investigate their influence on the bending strength and impact toughness of HIPed high-speed steel. MgSiO3 inclusion was found to be less harmful than Al2O3 inclusion in terms of mechanical properties. Additionally, the inclusion of Al2O3 of 0-20 μm under 0.02 vol.% showed a slight influence on the bending strength of certain HSS.
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