机电工程技术2025，Vol.54Issue(4)：38-45,8.DOI:10.3969/j.issn.1009-9492.2025.04.006
Al、Ti元素含量对激光熔化沉积技术制备的FeCrNi(AlTi)x中熵合金组织性能的影响
Influence of Al and Ti Element Content on the Microstructure and Performance of FeCrNi(AlTi)x Medium-entropy Alloys Prepared by Laser Melting Deposition
摘要
Abstract
In order to improve the mechanical properties and corrosion resistance of entropy alloy in FeCrNi system,the effects of different contents of Al and Ti elements on the microstructure,mechanical properties and corrosion resistance of entropy alloy in FeCrNi(AlTi)x(x=0.17,0.24)are studied by laser melting deposition technique.The results show that the addition of Al and Ti elements will change the phase structure of the alloy,and the volume fraction of BCC phase formed by FeCrNi(AlTi)0.24 with higher content of Al and Ti is higher.The hardness and tensile strength of the alloy increased from 392.4 HV and 656.39 MPa to 507.1 HV and 919.73 MPa with the increase of the content of Al and Ti elements,but the plasticity of the alloy also decreased due to the increase of solid solution strengthening and BCC phase content.In 3.5 wt%NaCl solution,the increase of Al and Ti content can effectively improve the protection of passivation film on the surface of FeCrNi(AlTi)x entropy alloy,effectively inhibit the occurrence of pitting on the alloy surface,and thus improve the corrosion resistance of the alloy.In a certain range,increasing the content of Al and Ti elements in FeCrNi(AlTi)x system can improve the mechanical properties and corrosion resistance of the alloy.关键词
中熵合金/激光熔化沉积/微观组织/力学性能/耐腐蚀性Key words
medium-entropy alloy/laser meting deposition/microstructure/mechanical property/corrosion resistance分类
矿业与冶金引用本文复制引用
王凯,刘铭杰,刘川,丁宗业,黎小辉,张立平,陈超,周功胜..Al、Ti元素含量对激光熔化沉积技术制备的FeCrNi(AlTi)x中熵合金组织性能的影响[J].机电工程技术,2025,54(4):38-45,8.基金项目
广东省基础与应用基础研究基金(2022A1515010761,2022A0505050081,2022A1515140028,2023A1515140124) （2022A1515010761,2022A0505050081,2022A1515140028,2023A1515140124）
广东省高校现代陶瓷与铝型材装备重点实验室(2017KSYS012) （2017KSYS012）
粤自然资合[2024]32号 （）
