http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Yun Fan,Xuan Tang,Shaohan Wang,Bin Chen 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.10
Various sets of heat treatments are applied on 7075 alloy in this study in order to reduce the treatment time and yet stillachieve the similar mechanical property as the traditional T6 tempered alloy. The main parameters like solid solution treatmenttime, single aging temperature, as well as first aging duration in double aging treatment, first aging temperature andsecond aging temperature are studied and valued by hardness test. The double aging treatment at 125 °C for 60 min andthen at 165 °C for 130 min is compared with traditional single aging treatment by using advanced Cs-corrected high-angleannular dark field scanning-transmission electron microscopy (HAADF-STEM). The precipitates and dispersoids found inthose two corresponding samples are mainly Cr-containing large dispersoids, a few η particles and large quantity of fineprecipitates like η′. The similarity of precipitates in them can well support the approximate hardness level of the doubleaged and single aged samples.