《Table 1 Microstructural characteristics of investigated Ti2AlNb alloys after different heat treatme

《Table 1 Microstructural characteristics of investigated Ti2AlNb alloys after different heat treatme   提示：宽带有限、当前游客访问压缩模式
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《新型Ti-22Al-25Nb-1Mo-1V-1Zr-0.2Si合金的显微组织演变与蠕变变形行为（英文）》


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HT0*:975°C，1.5 h，WQ；D represents the thickness，and L is the length.

The specimens were solution-treated at 975°C and then age-treated between 750 and 900°C at intervals of50°C for 6 h by air cooling.The heat-treated specimens were marked as HT1，HT2，HT3，and HT4，respectively（Table 1）.After that，cylindrical creep specimens with a diameter of 18 mm and a gauge length of 180 mm were machined.Creep tests were performed at 650°C under the applied stress of 150 MPa on a multi-functional electronic relaxation creep testing machine equipped with a three-zone furnace.The temperature of the sample was measured by three thermocouples closely attached to the upper，middle and lower section of the specimen respectively.The creep strains were continuously measured using a linear variable differential transducer（LVDT）extensometer having a strain resolution of±0.1μm.The acquisition of time-elongation data was accomplishedthroughacomputerprogram.Microstructureobservationwascarriedoutby field-emission scanning electron microscopy（SEM S4800）.The volume fraction and grain size were determined by the Image-Pro Plus software.Constituen phases of the alloys were characterized by X-ray diffraction（XRD）and transmission electron microscopy（TEM，JEM-200CX）.

图表编号XD0064472400    严禁用于非法目的
绘制时间2019.02.01
作者何永胜、胡锐、罗文忠、何涛、赖运金、杜玉俊、刘向宏
绘制单位西北工业大学凝固技术国家重点实验室、西部超导材料科技股份有限公司陕西省航空材料工程实验室、西北工业大学凝固技术国家重点实验室、西部超导材料科技股份有限公司陕西省航空材料工程实验室、西北工业大学凝固技术国家重点实验室、西部超导材料科技股份有限公司陕西省航空材料工程实验室、西部超导材料科技股份有限公司陕西省航空材料工程实验室、西部超导材料科技股份有限公司陕西省航空材料工程实验室、西部超导材料科技股份有限公司陕西省航空材料工程实验室
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