spherical cementite

There are two possible mechanism about spheroidization ofcementite: the fracture cementite lamellae grows up non-uniformly and the fine spherical cementite particles grows up as the core.

渗碳体的球化可能以两种机制进行：破碎渗碳体片的非均匀长大和细小球状渗碳体颗粒的形核长大。

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Fine and uniform cementite with spherical appearance distribute on the crystal boundary of equiaxed ferrite crystals. The size of spherical cementite particle is about 1 μ m and the size of ferrite grain is about 3 μ m.

在本实验条件下，细小、圆形的渗碳体均匀的分布在铁素体等轴晶粒的晶界处，球状渗碳体颗粒大小约为1μm，铁素体的平均晶粒大小约为3μm；

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