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The Interface Reaction between Titanium and Iron-Nickel alloys

机译:钛与铁镍合金的界面反应

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The reaction zones between pure titanium and iron-nickel and pure nickel at 1173 K have been characterized. Two alloys with different initial composition were analyzed. When Ni80Fe20 is used the layer sequence at the reaction interface is: Ni80Fe20 → Ni_(3)Ti → NiTi → NiTi_(2) →Ti, while for Ni48Fe52 the sequence is: Ni48Fe52 → Ni_(3)Ti → TiFe_(2) → TiFe → NiTi_(2) → Ti. The difference is in formation of NiTi, TiFe_(2) and TiFe phases. The reaction zone remains very thin independently of time due to the fast dissolution rate of Ti in the alloy. The two different elementary chemical interaction processes have been identified in this article, namely the growth of the reaction layers by solid state diffusion and chemical conversion of the compounds by reaction-diffusion in the solid state. The mathematical description combining these processes is presented for description of the diffusion path generated during diffusion process.
机译:表征了纯钛与铁镍和纯镍在1173 K之间的反应区。分析了两种具有不同初始组成的合金。使用Ni80Fe20时,反应界面的层顺序为:Ni80Fe20→Ni_(3)Ti→NiTi→NiTi_(2)→Ti,而对于Ni48Fe52,顺序为:Ni48Fe52→Ni_(3)Ti→TiFe_(2)→ TiFe→NiTi_(2)→Ti区别在于NiTi,TiFe_(2)和TiFe相的形成。由于Ti在合金中的快速溶解速率,反应区与时间无关地保持非常薄。本文已经确定了两种不同的基本化学相互作用过程,即通过固态扩散进行的反应层生长以及通过固态反应扩散进行的化合物的化学转化。提出了结合这些过程的数学描述,以描述在扩散过程中产生的扩散路径。

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