文献类型：期刊文献

英文题名：Research on the influence of ultra-low temperature extreme environments on the surface quality and fatigue life of FeCoCrNiAl0.6 high entropy alloy

作者：Zhang, Ping[1,2];Lin, Zhenyong[1];Yue, Xiujie[2,3];Sun, Yajie[1];Zhou, Hanping[1];Zhang, Jinlong[1]

机构：[1]Guangdong Ocean Univ, Coll Mech & Power Engn, Zhanjiang, Peoples R China;[2]Qingdao Huanghai Univ, Coll Intelligent Mfg, Qingdao 266520, Peoples R China;[3]Qingdao Univ Technol, Coll Intelligent Mfg, Qingdao 266520, Peoples R China

年份：2024

卷号：186

外文期刊名：INTERNATIONAL JOURNAL OF FATIGUE

收录：SCI-EXPANDED(收录号：WOS:001241488800001)、、EI(收录号：20242016089358)、Scopus(收录号：2-s2.0-85192791037)、WOS

基金：The work was supported by the National Natural Science Foundation of China (51705270), the National Natural Science Foundation of China (No. 51575289), the Natural Science Foundation of Guangdong Province (No. 2023A1515030171), Science and Technology Project of Zhanjiang City, Guangdong Province (No. 2022A01004), the Natural Science Foundation of Shandong Province (No. ZR2016EEP03), the Applied Basic Research Program of Qingdao city (No. 19-6-2-69-cg), Guangdong Ocean University research start-up project and Shandong Qingchuang Science and Technology Project (No. 2019KJB022) .

语种：英文

外文关键词：Low-temperature cooling cutting; High entropy alloy; Surface integrity; Tensile strength; Number of cycles

外文摘要：This study examines the impact of low-temperature cooling on the surface integrity and fatigue properties of the FeCoCrNiAl0.6 high entropy alloy during machining. Utilizing Abaqus2023/Fe-safe simulations, liquid nitrogen cooling, and fatigue tensile tests, it was observed that low-temperature machining improves surface quality and increases tensile strength and fatigue life compared to room temperature machining. At a cutting speed of 2800 mm/min while the temperature drops to -120 degrees C, the surface roughness can be minimized to the maximum extent possible. Yield strength and tensile strength increased by 7.6 % and 12.5 %, respectively, at this condition, compared to room temperature. Moreover, material strength improves significantly under low-temperature conditions, with yield and tensile strengths at -120 degrees C being 1.16 and 1.4 times higher than at room temperature. The fatigue life of specimens also improved under low-temperature conditions, with lives reaching 2.82 x 106 cycles at -120 degrees C, an 86.9 % increase over room temperature. The study concludes that optimal machining performance is achieved at higher cutting speeds and shallower cutting depths under low-temperature conditions.