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Effect of vanadium addition on microstructure and properties of AI_(0.5)Cr_(0.9)FeNi_(2.5)multi-principal alloys

Journal of Iron and Steel Research International 2021年第5期28卷 586-596页

作者： De-xi Hao Nan-nan Zhang Yue Zhang De-yuan Li Department of Material Science and Engineering Shenyang University of TechnologyShenyang 110870LiaoningChina Provincial Key Laboratory of Advanced Welding Technology and Automation Shenyang 110870LiaoningChina

AI_(0.5)Cr_(0.9)FeNi_(2.5)V_(x)(x=0,0.2,0.4,0.6,0.8,1.0)multi-principal alloys were prepared by vacuum arc *** effect of vanadium addition on its microstructure and properties was *** results show that the alloys of all components exhibited an FCC single-phase *** the addition of vanadium,the microstructure of the alloy changed from dendrites to equiaxed crystals,the grains were remarkably refined,and the layered CrV phase was exhibited,which improved the properties of the *** yield strength of the alloy was slightly improved,and the alloys with various components presented good *** V content reached 0.8,the yield strength was 600 MPa,and no fracture ***-wear testing showed that the wear debris was reduced with the addition of V *** sample with V element content of 0.4 had the best friction and wear *** surface grooves became shallow,the worn debris was less,and the wear mechanism was mainly abrasive *** polarisation curve showed that the alloy with V element content of 0.2 has the best corrosion *** passivation interval reached 900 *** corrosion potential and the corrosion current density were-496.299 mV and 2.759μA/cm^(2),respectively.

关键词： Multi-principal alloy vacuum arc melting CrV phase Adhesive wear Electrochemical testing

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