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用X射线衍射等方法研究了碳在Mn-Al-C合金中的行为.发现碳能提高强磁性相的稳定性、降低共析温度、影响合金相点阵参数和长程有序度,高C(>1%)合金还能析出碳化物相.本文从强磁性相的单轴应变、有序度、弥散碳化物以及晶体不完整性等几方面讨论了碳对磁性的贡献.实验研究了合金的潮解效应,提出了碳化物水解和次级裂纹产生的高碳合金的粉化机理.
The behavior of carbon in Mn-Al-C alloy was investigated by X-ray diffraction, etc. The results show that carbon can improve the stability of the ferromagnetic phase, reduce the eutectoid temperature, affect the lattice parameters and long-range order of the alloy phase, (> 1%) alloy can also precipitate carbide phase.In this paper, the contribution of carbon to magnetic properties is discussed in terms of uniaxial strain, ordered degree, dispersion carbide and crystal incompleteness of the ferromagnetic phase.Experimental study of the alloy , The chalking mechanism of high carbon alloy produced by carbides hydrolysis and secondary cracks was proposed.