Static and cyclic oxidation of Nb-Cr-V-W-Ta high entropy alloy in air from 600 to 1400℃
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第3期
论文作者：S.K.Varma Francelia Sanchez Sabastian Moncayo C.V.Ramana
文章页码：189 - 196
摘 要：An oxidation resistance study has been made on Nb-Cr-V-W-Ta high entropy alloy in a range of temperature from 600 to 1400℃ in air. Static oxidation study has been performed for either（a） 12 or 24 h of heating time or（b） 3 or 10℃/min heating rates to the desired oxidation temperature. Cyclic oxidation study conducted for three and a half days has been conducted at 600, 700, and 800℃ using 12 h of heating cycles. The alloy can withstand the cyclic oxidation process with only a reasonable loss of alloy. The identification of oxides indicates crystals of W and Ta oxides in cylindrical form while Nb and Cr oxides show a nodular or granular morphology at both 1000 and 1200℃ while and additional of oxide of V in whisker forms at 1200℃.
S.K.Varma1，Francelia Sanchez1，Sabastian Moncayo1，C.V.Ramana2
1. Department Metallurgical, Materials and Biomaterials Engineering, The University of Texas at El Paso2. Center for Advanced Materials Research(CMR), The University of Texas at El Paso
摘 要：An oxidation resistance study has been made on Nb-Cr-V-W-Ta high entropy alloy in a range of temperature from 600 to 1400℃ in air. Static oxidation study has been performed for either（a） 12 or 24 h of heating time or（b） 3 or 10℃/min heating rates to the desired oxidation temperature. Cyclic oxidation study conducted for three and a half days has been conducted at 600, 700, and 800℃ using 12 h of heating cycles. The alloy can withstand the cyclic oxidation process with only a reasonable loss of alloy. The identification of oxides indicates crystals of W and Ta oxides in cylindrical form while Nb and Cr oxides show a nodular or granular morphology at both 1000 and 1200℃ while and additional of oxide of V in whisker forms at 1200℃.
关键词：
