Effect of Tempering Temperature on Low-Temperature Toughness of 9Ni Steel
YANG Xiu-li1;LIU Dong-feng1;2;HOU Li-feng1;LU Shu-juan2;LI Da-zhao1;WEI Ying-hui1[1.College of Materials Science and Engineering;Taiyuan University of Technology;Taiyuan 030024;Shanxi;China;2.Technical Center;Taiyuan Iron and Steel Co Ltd;Taiyuan 030003;Shanxi;China]