【摘要】 用自制的磁场热处理设备对低碳钢进行施加磁场与不施加磁场的淬火处理,研究了奥氏体在饱和肥皂水及1.67molL的NaCl溶液冷却介质中的组织转变,观察了相变后的组织变化。结果表明:在低碳钢发生奥氏体向铁素体转变时,稳恒磁场可以明显提高铁素体的体积分数,并能促进铁素体形核,使铁素体晶粒细化和均匀化。由于奥氏体和铁素体的磁导率不同,磁场能使相变后的铁素体和珠光体的析出形成链状组织。更多还原

【Abstract】 The experimental equipment designed by the author was used to carry out quenching treatments of low carbon steel,cooling in the mediums of saturated suds and 1\^67mol/L NaCl solution with and without magnetic field,respectively.The microstructure of the quenched steel was observed by optical microscope.The results show that the application of magnetic field can obviously increase the volume fraction of ferrite of the low carbon steel, promote the forming of ferrite nucleus, make the ferrite grain refining and homogenization.Magmetic field can make the ferrite and the pearlite forming chain structure due to the difference of susceptibility of austenite and the ferrite.更多还原