RESEARCH ON THE DOMESTIC MATERIALS OF FORGING Z12CN13 STAINLESS STEEL FOR HOLD-DOWN SPRING OF REACTOR
Effects of main alloying elements,quenching and tempering temperatures and quenching cooling velocity on mechanical properties of Z12CN13 stainless steel were obtained by controlling the material composition and optimizing the heat treatments.Evaluation of domestic forging Z12CN13 stainless steel for Hold-Down Spring of reactor had been completed,and all parameters met the requirement of design criteria national standard.The main alloying elements should be selected from upper limits to reach the technical standards of the strength and toughness properties.The strength,plasticity and toughness properties of domestic forging Z12CN13 stainless steel will decrease with increasing the quenching temperature.On the contrary,the strength decreases,plasticity and the toughness properties will increase with the increasing of tempering temperature.The tensile strength and impact toughness of materials are influenced obviously with the quenching cooling velocity.Improving the cooling velocity could meet the technical standards of the strength and toughness properties.The comprehensive mechanical properties and combination of strength and toughness is the best when the domestic forging Z12CN13 stainless steel is quenched at 985℃ and then cooling fast and aged at 640℃.
Z12CN13 quenching temperature tempering temperature quenching cooling velocity
LI Ning Luo Ying Xia Xin Du Hua
National Key Laboratory of Science and Technology on Reactor System Design Technology Chengdu 610041,China
国际会议
Energy Materials 2014(第一届能源材料国际会议)
西安
英文
515-521
2014-11-04（万方平台首次上网日期，不代表论文的发表时间）