Study on Low Temperature Properties of QTD 1050-6 Material
Author of the article:ZHENG Yanbiao;ZHANG Jun;QI Ji;WEN Hong;JIN Zhiping
Author's Workplace：Hubei Mechanical and Electrical Research and Design Institute Co.,Ltd.,Wuhan 430000,China
Key Words：ADI low temperature performance tensile strength elongation
Abstract：The low temperature mechanical properties of QTD 1050-7 were studied. The results show that compared with the mechanical properties at room temperature, the mechanical properties of the material change greatly at low temperature,but it still has good comprehensive mechanical properties. At-20 ℃, the tensile strength increases by 6.85%, the elongation is 7.40%, and the impact energy decreases by 12.63% at 74 J. At-60 ℃, the tensile strength increases by 8.39%, the elongation decreases by 29.04%, and the impact energy decreases by 66.67%. At-60 ℃, the range of hardness is relatively small and the hardness is the highest, which is 8.48% higher than that at room temperature.
