最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

Pure vanadium samples were prepared by hot isostatic pressing (HIP) technology. High temperature mechanical properties of the as-prepared samples in the range of 700-1100 oC were tested by means of high temperature tensile testing. The fracture surfaces and microstructures were analyzed using scanning electron microscope (SEM) and optical microscope (OM). The results show that the tensile strength, elongation and reduction in area are temperature-dependent and show approximately linear decrease with increasing the temperature. Vanadium possesses good tensile strength and ductility as the tensile temperature is 700-800 oC, and shows a feature of ductile fracture. However, a mixed ductile-brittle fracture surface is observed at the testing temperature 900-1100 oC and the cleavage face is increased with the tensile temperature rising.