强磁场对高铬钢中碳化物低温回火析出的影响

Influence of strong magnetic field on carbide precipitation of high chromium steel at low temperature tempering

借助透射电镜、维氏硬度仪及计算机模拟,研究了外加强磁场对高铬钢中碳化物低温回火析出的影响。结果表明,试验钢分别在无磁场及外加磁场强度为12T的条件下于200℃回火60min时均有M3C型碳化物析出;在外加磁场作用下,试验钢中析出的M3C型碳化物数密度相比无外加磁场作用时的相应值显著增加,但试验钢显微硬度未发生明显改变。

The effect of high magnetic field on carbide precipitation of high chromium steel during low temperature tempering was investigated by means of TEM,Vickers hardness tester and computer simulations.The results show that the carbides of M 3C precipitate in the samples during 200℃tempering for 60 min without or with the presence of high magnetic field(12 T).However,the number density of carbides significantly increases in the magnetic field than that without the magnetic field and the microhardness of the samples does not increase markedly in the meanwhile.