Effect of Partial Solution Treatment on Toughness of 12%Cr-0.3%C Steels
スポンサーリンク
概要
- 論文の詳細を見る
In 12%Cr-0.3%C martensitic steels, the effect of partial solution (PS) treatment in the (γ+carbide) two phase region was investigated in terms of the relation between microstructure and impact toughness. PS treatment is very effective for refining γ grains, because insoluble carbide particles works as obstacles to grain growth. The γ grain refining results in a significant lowering of Ductile-Brittle Transition Temperature (DBTT). This is mainly due to the reduction of grain boundary stress concentration which is caused by pile-up of dislocations to grain boundary. Besides, PS treatment contributes to homogeneous dispersion of carbide particles: In specimens with full solution (FS) treatment, carbide particles precipitate along lath boundary of martensite during tempering, and this causes early crack initiation in impact testing. On the other hand, in specimens with PS treatment, carbides preferentially precipitate on insoluble carbide particles which have homogeneously dispersed within the martensite matrix. This results in an increase of upper shelf energy in impact testing. It was also found that PS treatment suppresses precipitation of grain boundary carbide which occurs during slow cooling from γ phase region, because the insoluble carbide particles provide preferential precipitation site within γ grains. As a result, DBTT is not dependent on cooling rate in PS treated specimens, although it is greatly raised in FS treated specimens with slow cooling because of the grain boundary precipitation of carbide.
- 社団法人 日本鉄鋼協会の論文
- 1999-02-15
著者
-
Takaki Setsuo
Department Of Material Science And Engineering Kyushu University
-
Tsuchiyama Toshihiro
Department Of Material Science And Engineering Kyushu University
-
Tsuchiyama Toshihiro
Department Of Materials Physics And Chemistry Graduate School Of Engineering Kyushu University
-
Takaki Setsuo
Department Of Materials Physics And Chemistry Graduate School Of Engineering Kyushu University
関連論文
- Microstructure and Mechanical Properties in Ultra Fine-grained Oxide-dispersion Ferritic Stainless Steel
- Characterization of Submicron Ultrafine Grained Steel and Its Application
- Effect of Interstitial Elements on Hall-Petch Coefficient of Ferritic Iron
- Work-Hardening Mechanism during Super-Heavy Plastic Deformation in Mechanically Milled Iron Powder
- Conditions for Grain Boundary Bulging during Tempering of Lath Martensite in Ultra-low Carbon Steel
- Contribution of Soft Copper Particle on Work Hardening Behavior in Ferritic Iron
- Microstructure and Mechanical Property of Copper Bearing Eutectoid Steel
- Factors Inducing Intergranular Fracture in Nickel-free High Nitrogen Austenitic Stainless Steel Produced by Solution Nitriding
- Variant Selection of Reversed Austenite in Lath Martensite
- Effect of Solute Copper on Yield Strength in Dislocation-strengthened Steels
- Effect of Grain Refinement on Thermal Stability of Metastable Austenitic Steel
- Mechanism of Toughening in Ferritic Iron by Solute Copper at Low Temperature
- Effect of Grain Refinement on Tensile Properties in Fe-25Cr-1N Alloy
- Step Aging of a Sintered Ti-13mass%Cr β Alloy
- Focused ion beam fabrication of field-ion microscope specimens from mechanically milled pearlitic steel powder
- Calculation of Nitrogen Absorption into Austenitic Stainless Steel Plate and Wire
- Structural Control of Stainless Steel by Nitrogen Absorption in Solid State
- Phase Transformation Mechanism of Fe-Cu Alloys
- Fabrication of Fine-grained High Nitrogen Austenitic Steels through Mechanical Alloying Treatment
- Interaction between Dislocation and Copper Particles in Fe-Cu Alloys
- Strengthening Mechanism of Cu bearing Heat Resistant Martensitic Steels
- Effect of Partial Solution Treatment on Toughness of 12%Cr-0.3%C Steels
- Self-Division Behavier of TiB Particles in TiB/Ti Composite
- Effect of Carbon on Nano-Crystallization in Steel during Mechanical Milling Treatment
- Effect of Initial Microstructure on Superplasticity in Ultrafine Grained 18Cr-9Ni Stainless Steel
- Temperature Dependence of Austenite Nucleation Behavior from Lath Martensite
- Effect of Phosphorus on Hall-Petch Coefficient in Ferritic Steel
- Strengthening Mechanism in Ultra Low Carbon Martensitic Steel
- Brittle-to-ductile Transition in Nickel-free Austenitic Stainless Steels with High Nitrogen
- Isothermal Transformation in Fe–N Hypereutectoid Alloy
- Optimal Chemical Composition in Fe-Cr-Ni Alloys for Ultra Grain Refining by Reversion from Deformation Induced Martensite.
- Isothermal Transformation in Fe-N Hypereutectoid Alloy
- Mechanical Properties of Strength-Gradient Steel Sheets Produced by Solution Nitriding