Crystallization Process of Iron-base Amorphous Alloy (Fe-P-C) Quenched from Liquids
スポンサーリンク
概要
- 論文の詳細を見る
The crystallization process of an iron-base amorphous alloy (Fe-P-C) was studied by means of electrical resistivity and differential specific heat measurements, transmission electron microscopy and X-ray diffraction, and the transformation sequence from the amorphous state to the crystalline state was clarified together with the precipitation morphology of the metastable and stable phases. The main results obtained are as follows : (1) The crystallization process of the amorphous Fe-P-C alloy is divided into four states ; (a) the stage of incipient crystallization where the short range ordering of atoms is considered to occur in the amorphous phase, (b) the formation of a metastable bcc phase (MS-I) with a lattice constant a_0=2.87 A, (c) the formation of second metastable phase (MS-II) with complex structure, and (d) the formation of stable phase consisting of mixtures of α-Fe, Fe_3C and Fe_3P. (2) The MS-I phase disperses homogeneously in the amorphous matrix as a number of microcrystallites, which are in a cubic shape with a dimension of about 100 to 500 A at temperatures above about 350℃. The precipitation is induced by homogeneous nucleation and extremely slow growth, and after prolonged aging the size and number of this phase remain constant. The MS-II phase appears in the amorphous matrix with an oval shape at about 430℃ and has a lath martensite-like internal structure. It grows rapidly from a few nuclei and completely spreads over the amorphous matrix containing the MS-I phase. Above about 450℃, the MS-II phase transforms to the stable phase. (3) The prolonged aging at temperatures lower than about 350℃ or a relatively slower cooling from the liquid state changes the amorphous structure to a simple bcc structure.
- 東北大学の論文
著者
-
Masumoto Tsuyoshi
The Research Development Corporation Of Japan:the Research Institute For Iron Steel And Other Metals
-
KIMURA Hiroshi
The Research Institute for Iron, Steel and Other Metals
-
Kimura Hiroshi
The Research Institute For Iron Steel And Other Metals
関連論文
- Random Anisotropy Model for Nanocrystalline Soft Magnetic Alloys with Grain-Size Distribution
- Development of Common Mode Choke Coil Made of New Nanocrystalline Soft Magnetic Alloy "NANOPERM^[○!R]"
- Compositional Effect on the Two-Stage Enthalpy Relaxation of Metal-Metalloid Amorphous Alloys upon Annealing
- Superconducting Properties of Metastable bcc Solid Solution in Melt-quenched Zr-Ge Binary Alloys
- Young's Modulus of Fe-Si-B Amorphous Wires
- The Critical Thickness for the Formation of Fe-, Ni- and Co-Based Amorphous Alloys with Metalloids
- Formation Range, Mechanical Properties and Thermal Stability of Superconducting Zr-Si Amorphous Alloys
- Preparation of Amorphous Metallic Powder
- Effects of Substrate Temperature and Heat Treatment on GMR Properties of Co-RE-O Nano-granular Films
- Effect of Temperature and Deformation on the Structure of Amorphous Metals
- Powder-Forming Tendency of Nonequilibrium Phases in Fe-C-X (X=Cr, Mo, W, Al or Si) Alloys by Comminution and Microstructure and Hardness of Their Sintered Compacts
- Hydrogenation of Amorphous and Crystalline Gd-Co Alloys
- Dynamic Compaction of Amorphous Co_Fe_Si_B_ Alloy Powders Obtained by a Cavitation Method
- Delayed Fracture of Amorphous Alloys in Atmosphere
- Crystallization Behavior of Amorphous High-Carbon Alloy Steels
- Nonequilibrium Phases in Melt-Quenched Co-W-C Alloys and Their Powder-Forming Tendency by Comminution
- Structural Diagrams and Phase Reactions of Fe-Cr-N Ternary System
- Microstructures and Nitrides of Fe-Cr-N Ternary System
- High Frequency Core Loss and Initial Permeability of Ferromagnetic Amorphous Ribbons
- Magnetostriction of Fe-Co Amorphous Alloys
- Ti-Nb-Si Amorphous Alloys for Application to Diaphragm in Watches
- The Structure of Amorphous Iron-Phosphorus Alloys
- Structural Study of an Amorphous Liquid-quenched Ni_-P_ Alloy
- Effects of Alloying Elements on the Corrosion Behavior of Amorphous Cobalt-Base Alloys
- Effect of Molybdenum on the Corrosion Behavior of Amorphous Fe-Mo-C alloys in 1N HCl
- Effect of Nickel on the Solubility and Diffusion of Nitrogen in Alpha-Iron
- Influence of Hydrogenation on the Magnetic Properties of Gd-Co Amorphous Alloys
- Hydrogenation of Amorphous and Crystalline RE-Ni Alloys
- Thermal, Magnetic and Electrical Properties of Mn-Metalloid Amorphous Ribbons
- The Magnetic and Electric Properties of (Co_ Mn_x)_2B Crystalline compounds and Amorphous Alloys
- Pressure Effects on the Curie Temperature and Electrical Resistance of Fe-based Amorphous Alloys
- Static Consolidation of Co-base Amorphous Alloy Powders and Their Mechanical and Magnetic Properties
- Softening of Co-base Amorphous Alloys at High Temperatures
- Short-Range Structures of Amorphous and Liquid Iron and Pd_-Si_ Alloy
- Magnetic Properties of Amorphous Fe-Zr-B Alloys
- Electrical Resistance in Superconducting Amorphous Alloy Zr_Ir_
- Upper Critical Field of Superconducting Amorphous Alloy Zr_Si_
- Effect of Compositions on the Crystallization of (Fe, Ni, Co)-Si-B Amorphous Alloys
- An Electron Microscopic Study on the Crystallization of Amorphous Ti-(Fe, Co or Ni)-B Alloys
- Superconductivity of Ti-Nb-Si Alloys Crystallized from the Amorphous State
- Magnetic Properties of Amorphous (Fe_Mn_x)_Zr_ Ferromagnets
- Solubility of Nitrogen in Austenitic Iron under High Nitrogen Pressure and Thermodynamic Properties of Iron-Nitrogen Interstitial Solid Solution
- Development of High Temperature and High Pressure Equipment for Study of Reaction between Gas and Metals, and Some Experimental Results
- Structural Diagrams and Solid Phase Reactions of the Quaternary 7% Cr-Fe-C-N System
- Structural Diagrams and Phase Reactions of the Quaternary 12%Cr-Fe-C-N System
- Constitutional Diagrams of Iron-Rich Corner in 18% Cr-Fe-C-N System
- Corrosion Behavior of Amorphous Ni-Ti-P and Ni-Cr-P Alloys
- Effect of Chromium Addition on Corrosion Resistance of Amorphous Fe-B-C and Fe-B-Si Alloys
- Effect of Nickel Addition on Corrosion Resistance of Amorphous Iron Base Alloys
- Precipitation of Carbides in 12% Cr Steel during Tempering
- Anomalous Contraction near 500℃ in Austenitic Heat-Resisting Alloys Containing Chromium and Nickel
- Densities of Metal-Metalloid Amorphous Alloys
- Crystallization and Electrical Properties of Amorphous Cu-Ag-P Alloys
- Morphology of Zr or Ti Based Amorphous Alloys after Hydrogen Absorption and Desorption Cycles
- Neutron Irradiation Effects in Amorphous Pd-Si Alloy
- An X Ray Photoelectron Spectroscopic Study of Surface Films on Amorphous Fe-Cr-Mo-P-C Alloys in 6 N HCl at 80℃
- Spontaneously Passivating Amorphous Fe-Cr-Mo-Metalloid Alloys in 6 N HCl at Room Temperature and 80℃
- Effects of Surface Oxide Layer and Metalloid Elements on the Hydrogen Absorption and Desorption Characteristics of Amorphous Ti-Ni and Zr-Ni Alloys
- New Co-Fe Amorphous Alloys as Soft Magnetic Materials
- New Amorphous Ferromagnets with Low Coercive Force
- On the Magnetization Process in an Iron-Phosphorus-Carbon Amorphous Ferromagnet
- Preparation of a High T_c Superconductor by Oxidization of an Amorphous La_Sr_Cu Alloy Ribbon in Air
- Anisotropy in Young's Modulus of Nonferromagnetic Amorphous Wide Ribbons
- Elinvar Characteristics of Amorphous Alloys and Their Applications
- Soft Magnetic Co-Ti-B Amorphous Alloys with High Corrosion Resistance
- The Pole Effect of Ferromagnetic Thin Sheets and Stiffening of Fe-B Base Amorphous Alloys
- Invar- and Elinvar-Type Amorphous Fe-Cr-B Alloys with High Corrosion Resistance
- Elastic Properties and Temperature Coefficient of Delay Time in Amorphous Pd-Si Alloys
- INVAR AND ELINVAR CHARACTERISTICS IN AMORPHOUS Fe-BASE ALLOYS
- Young's Modulus and Delay Time Characteristics of Ferromagnetic Fe-Si-B Amorphous Alloys
- Thermal Expansion Anomaly in Some Ferromagnetic Amorphous Alloys
- Composition and Heat-treatment of Fe_ (B, C, Si)_ Amorphous Alloys as Low Core Loss Materials
- Recent Studies of Superconducting Amorphous Alloys
- Amorphous Phase Formation in the Zirconium-Poor Corner of (Fe, Co, Ni)-Zr systems
- Nucleation and Growth of Stress Relief Patterns in Sputtered Molybdenum Films
- New Secondary Phase in Austenitic Fe-Co-Cr-Ni Base Heat-Resisting Alloy
- Determination of Condition for Electrolytic Extractions of Nitrides in Steel by Means of Potentiostat
- Precipitation Process and Age-Hardenability of Austenitic Fe-Co-Cr-Ni Base Heat-Resisting Alloys
- SOFT MAGNETIC PROPERTIES OF AMORPHOUS Fe-Co-Ni BASE ALLOYS WITH Si AND B
- Thermal Instability and Crystallization Characteristics of Amorphous Metal-Metalloid System
- Magnetic Properties of Amorphous (Fe_Cr_x)-P-C and (Co_Fe_x)-B-Si Alloys
- Corrosion and Erosion of Ferritic Steel by Liquid Bismuth
- Spin Wave Excitation in Amorphous Fe-P-C Alloys
- Mechanical Properties of Amorphous Cu-Zr Alloy
- Electrical Resistivity and Its Temperature Dependence of Al-base Quasicrystalline and Crystalline Alloys
- Mechanical Properties and Thermal Stability of (Fe, Co, Ni)-Mo-C Quaternary Amorphous Alloys
- Mechanical Properties and Thermal Stability of (Fe, Co, Ni)-M-B (M=IV, V and VI Group Transition Metals) Amorphous Alloys with Low Boron Concentration
- Effect of Ternary Element Addition on Hydrogen Absorption and Desorption Properties of Amorphous Zr_Ni_ Alloy
- Viscoelastic Behavior of Amorphous Metals
- Icosahedral Quasicrystals of a Melt-Quenched Al-Mn Alloy Observed by High-Resolution Electron Microscopy
- Recent Development of Research on Amorphous Metals
- Effect of Metalloidal Elements on the Thermal Stability of Amorphous Iron-Base Alloys
- MELT-QUENCHED AMORPHOUS SUPERCONDUCTING ALLOYS
- Crystallization Process of Iron-base Amorphous Alloy (Fe-P-C) Quenched from Liquids
- Formation and Thermal Stability of Amorphous Phase in Transition Metal-Phosphorus Binary Alloys
- Fabrication and Applications-Oriented Properties of Amorphous Metal Matrix Composites
- Amorphous Magnetic Alloys
- CHARACTERISTICS OF (Fe, Co AND/OR Ni)-Zr AMORPHOUS ALLOYS
- Tensile Properties of Iron-base Amorphous Alloy (Fe-P-C) Quenched from Liquid
- Spontaneous Oxidization of an Amorphous Zr_Au_ Alloy in Air