第一作者：李阳
通讯作者：徐光
合写作者：杨皓,陈常勇,姜周华,夏玲,李文宇
发表刊物：Steel Research International
期号：12
卷号：94
影响因子：1.9
DOI码：10.1002/srin.202300160
所属单位：东北大学冶金学院
教研室：绿色智能特殊钢冶金研究中心
摘要：Herein, Mg in L6 steel is increased by pressure smelting raised to a high level (0.046-0.2%), which is difficult to reach under conventional conditions. It is found that Mg can form MgC2 carbide and become the heterogeneous nucleation core of granular pearlite in steel. The precipitation amount and temperature of MgC2 increase greatly with the increase of Mg mass fraction. When the mass fraction of Mg reaches 0.046%, the spheroidizing effect is the best, and the cutting performance is improved. When the mass fraction of Mg is higher than this range, pearlite agglomeration appears, resulting in uneven structure. The effect of pearlite spheroidization induced by MgC2 carbide is still effective in the full annealed state and can significantly reduce the strength and hardness of the full annealed steel. When the mass fraction of Mg is 0.046%, the best performance of the full annealed steel is close to that of spheroidized annealed steel without Mg. The comprehensive properties of full annealed Q-T steel with 0.046% Mg are similar to those of spheroidized Q-T steel without Mg addition.
关键字：heat treatmentL6 steelMg treatmentsMgC2pearlite
论文类型：SCI
备注：无
学科门类：工学
一级学科：冶金工程
页面范围：2300160
ISSN号：1611-3683
是否译文：否