Metastable phase formation in Fe-Si system using non-equilibrium techniques

被引：11

作者：

Gupta, A ^{[1
]}

Dhuri, P ^{[1
]}

机构：

[1] DAE Facil, Inter Univ Consortium, Indore 452017, Madhya Pradesh, India

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2001年 / 304卷 / 1-2期

关键词：

Fe-Si; mechanical alloying; solid state interdifussion; swift heavy ion irradiation; amorphisation;

D O I：

10.1016/S0921-5093(00)01515-X

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Metastable alloy phase formation in Fe/Si system with nominal composition Fe30Si50 using the techniques of mechanical alloying (MA). solid state interdiffusion (SSI) and swift heavy ion (SHI) irradiation has been compared. The products of SSI depend upon the structure Of the iron lavers. In the multilayer with amorphous iron layer, the product of SSI is crystalline FeSi phase, while in the multilayer with crystalline iran layer the product is an amorphous phase. ht results in the formation of metastable BCC phase with extended solid solubility. Results of both MA and SSI call be understood in terms of a model in which an asymmetry in the diffusivities of the two constituents is a necessary condition for amorphisation to occur during solid state reaction. Amorphisation during SHI irradiation can he understood in terms of a thermal spike model. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：394 / 398

页数：5

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