Abstract
When 316 L stainless steel specimens are compressed to 30% and annealed at 1300 °C, primary recrystallization rapidly occurs and grains grow normally during further annealing treatment. Thus by annealing for various periods at 1300 °C, specimens with varying average sizes with identical normalized grain size distributions are obtained. When these specimens are heat-treated again at temperatures below 1150 °C, abnormal grain growth (AGG) occurs depending critically on the initial grain size.With decreasing initial grain size, AGG begins earlier during the heat-treatment, and if the initial grain size is large, only slow grain growth occurs without any distinct AGG for periods up to 48 and 96 h. It is observed that AGG occurs by faster growth of large grains with their velocities expected to increase nonlinearly with the driving force arising from the size difference. Because the AGG structure develops gradually, there is not really a well defined incubation time. With the same initial grain size the initiation ofAGGis slower at lower temperatures. A step heat-treatment experiment shows that if there are large grains embedded in the matrix of fine grains, they can grow abnormally under the condition where no AGG occurs with a narrow grain size distribution. The extremely slow grain growth with initially large average grain sizes is attributed to the low grain boundary velocity limited by the boundary step nucleation or growth. It is proposed that the same boundary step mechanism is qualitatively consistent with abnormal growth of the large grains with singular grain boundaries at low temperatures.
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This work was supported by Pohang Iron and Steel Company. One of the authors (D.Y.Y.) is also grateful to the Alexander von Humboldt Foundation for partially supporting this work.
References
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© 2001 Carl Hanser Verlag, München
Articles in the same Issue
- Frontmatter
- Editorial
- “No wise man ever wish to be younger”
- Aufsätze/Articles
- Entropy, Transformations and Sustainability of Industrial Life Cycles
- Positron Annihilation in Stable and Supercooled Metallic Melts
- Local Characterization of the Diffusion Process during Discontinuous Precipitation: A Review
- The Dependence of Abnormal Grain Growth on Initial Grain Size in 316 L Stainless Steel
- Diffusion-Controlled Grain Growth in Liquid-Phase Sintering of W–Cu Nanocomposites
- Evaluation of Densification Mechanisms of Liquid-Phase Sintering
- Phase Transformation of a Dual Phase Al–Fe Alloy Prepared by Mechanical Alloying
- Discrete Element Simulation of Ceramic Powder Processing
- Strain Relaxation and Internal Friction in the Range of the Glass Transition
- A Thermodynamic Model of an Amorphous Grain Boundary Phase in Liquid-Phase Sintered β-SiAlON Ceramic
- Epitaxial Growth of Metals on (100) SrTiO3: The Influence of Lattice Mismatch and Reactivity
- Microstructure and Modifications of Cu/Al2O3 Interfaces
- Structural Transformations Induced by Swift Heavy Ions in Polysiloxanes and Polycarbosilanes
- Metastable Al–Nd–Ni and Stable Al–La–Ni Phase Equilibria
- Phase Equilibria of the Al–Nd and Al–Nd–Ni Systems
- System Pr –Pd–O: Phase Diagram and Thermodynamic Properties of Ternary Oxides Using Solid-State Cells with Special Features
- Calculation of Phase Equilibria in Candidate Solder Alloys
- Thermodynamic Assessment of the Zr–O Binary System
- Delaminating Layered Oxide Composites with Wavy Interfaces
- Contemporary Materials Issues for Advanced EB-PVD Thermal Barrier Coating Systems
- Monte Carlo Simulations of Strength Distributions of Brittle Materials – Type of Distribution, Specimen and Sample Size
- On the Optimization of the Microstructure in Powder Metallurgical Ag–SnO2–In2O3 Contact Materials
- Some New Aspects of Microstructural Design of β-Si3N4 Ceramics
- Ni-Based SOFC Anodes: Microstructure and Electrochemistry
- Effect of Copper Line Geometry and Process Parameters on Interconnect Microstructure and Degradation Processes
- Thermal Stability of Nanoscale Co/Cu Multilayers
- Methods for Characterising the Precipitation of Nanometer-Sized Secondary Hardening Carbides and Related Effects in Tool Steels
- Prediction of Local Strain and Hardness in Sheet Forming
- Novel in situ-Infiltrated Al2O3-Metal Composites
- Influence of Microstructure and Impurities on Thermal Conductivity of Aluminium Nitride Ceramics
- Notifications/Mitteilungen
- Personelles/Personal
- Bücher/Books
- Tagungen/Conferences
Articles in the same Issue
- Frontmatter
- Editorial
- “No wise man ever wish to be younger”
- Aufsätze/Articles
- Entropy, Transformations and Sustainability of Industrial Life Cycles
- Positron Annihilation in Stable and Supercooled Metallic Melts
- Local Characterization of the Diffusion Process during Discontinuous Precipitation: A Review
- The Dependence of Abnormal Grain Growth on Initial Grain Size in 316 L Stainless Steel
- Diffusion-Controlled Grain Growth in Liquid-Phase Sintering of W–Cu Nanocomposites
- Evaluation of Densification Mechanisms of Liquid-Phase Sintering
- Phase Transformation of a Dual Phase Al–Fe Alloy Prepared by Mechanical Alloying
- Discrete Element Simulation of Ceramic Powder Processing
- Strain Relaxation and Internal Friction in the Range of the Glass Transition
- A Thermodynamic Model of an Amorphous Grain Boundary Phase in Liquid-Phase Sintered β-SiAlON Ceramic
- Epitaxial Growth of Metals on (100) SrTiO3: The Influence of Lattice Mismatch and Reactivity
- Microstructure and Modifications of Cu/Al2O3 Interfaces
- Structural Transformations Induced by Swift Heavy Ions in Polysiloxanes and Polycarbosilanes
- Metastable Al–Nd–Ni and Stable Al–La–Ni Phase Equilibria
- Phase Equilibria of the Al–Nd and Al–Nd–Ni Systems
- System Pr –Pd–O: Phase Diagram and Thermodynamic Properties of Ternary Oxides Using Solid-State Cells with Special Features
- Calculation of Phase Equilibria in Candidate Solder Alloys
- Thermodynamic Assessment of the Zr–O Binary System
- Delaminating Layered Oxide Composites with Wavy Interfaces
- Contemporary Materials Issues for Advanced EB-PVD Thermal Barrier Coating Systems
- Monte Carlo Simulations of Strength Distributions of Brittle Materials – Type of Distribution, Specimen and Sample Size
- On the Optimization of the Microstructure in Powder Metallurgical Ag–SnO2–In2O3 Contact Materials
- Some New Aspects of Microstructural Design of β-Si3N4 Ceramics
- Ni-Based SOFC Anodes: Microstructure and Electrochemistry
- Effect of Copper Line Geometry and Process Parameters on Interconnect Microstructure and Degradation Processes
- Thermal Stability of Nanoscale Co/Cu Multilayers
- Methods for Characterising the Precipitation of Nanometer-Sized Secondary Hardening Carbides and Related Effects in Tool Steels
- Prediction of Local Strain and Hardness in Sheet Forming
- Novel in situ-Infiltrated Al2O3-Metal Composites
- Influence of Microstructure and Impurities on Thermal Conductivity of Aluminium Nitride Ceramics
- Notifications/Mitteilungen
- Personelles/Personal
- Bücher/Books
- Tagungen/Conferences