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Prior Austenite Grain

Effect of Carbide Size Distribution on the Impact Toughness of Tempered Martensitic Steels with Two Different Prior Austenite Grain Sizes Evaluated by Instrumented Charpy Test

Effect of Carbide Size Distribution on the Impact Toughness of Tempered Martensitic Steels with Two Different Prior Austenite Grain Sizes Evaluated by Instrumented Charpy Test

... The effect of tempering temperature on the impact toughness of 0.3 mass % carbon martensitic steels with prior austenite grain (PAG) size of about 6 and 60 µm was investigated. Instrumented Charpy ...

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Microstructures of Pearlite and Martensite Transformed from Ultrafine Grained Austenite Fabricated through Cyclic Heat Treatment in Medium Carbon Steels

Microstructures of Pearlite and Martensite Transformed from Ultrafine Grained Austenite Fabricated through Cyclic Heat Treatment in Medium Carbon Steels

... the prior austenite grain boundaries in ...The prior austenite grains were significantly refined through the cyclic heat ...to austenite, resulting in the grain refinement of ...

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Effects of Titanium and Oxygen Content on Microstructure
in Low Carbon Steels

Effects of Titanium and Oxygen Content on Microstructure in Low Carbon Steels

... increasing prior austenite grain size up to ...at austenite grain sizes between 100 µm and 350 µm, the larger austenite grain size, the more intragranular ferrite was ...

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Surface Hot Shortness of Copper Containing Steel in a Compact Strip Production Process

Surface Hot Shortness of Copper Containing Steel in a Compact Strip Production Process

... steels prior to treatment in a reheating tunnel furnace at 1100 C. The prior austenite grain size of a sample that was reheated from ...

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An Advanced Fitting Method for Crystallographic and Morphological Analyses of EBSD Data Applied for Low Carbon Steel Martensite

An Advanced Fitting Method for Crystallographic and Morphological Analyses of EBSD Data Applied for Low Carbon Steel Martensite

... average prior austenite grain size of 70 ...Three prior austenite grains which were numbered as grain 1, grain 2 and grain 3, were analyzed by the improved fitting ...

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Effects of Austenite Conditioning on Austenite/Ferrite Phase Transformation of HSLA Steel

Effects of Austenite Conditioning on Austenite/Ferrite Phase Transformation of HSLA Steel

... of prior austenite grain boundaries and deformation bands on austenite/ferrite phase transformation of high strength low alloy (HSLA) steel during hot working were investigated through ...

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Evaluation of Workability on Microstructure and Mechanical Property of Modified 9Cr-2W Steel for Fuel Cladding by Cold Drawing Process and Intermediate Heat Treatment Condition

Evaluation of Workability on Microstructure and Mechanical Property of Modified 9Cr-2W Steel for Fuel Cladding by Cold Drawing Process and Intermediate Heat Treatment Condition

... Since the prior austenite grain size of alloy N is larger than that of alloy B, the maximum compressive 190. stress of alloy N has a smaller value in the Hall-Petch equation[r] ...

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Austenite Grain Coarsening Under the Influence of Niobium Carbonitrides

Austenite Grain Coarsening Under the Influence of Niobium Carbonitrides

... the austenite grain will determine the rates of transformation through points of nucleation and paths for ...the grain coarsening behaviour is essential for predicting final mechanical properties of ...

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The Role of Inclusions and Austenite Grain Size on Intragranular Nucleation of Ferrite in Medium Carbon Microalloyed Steels

The Role of Inclusions and Austenite Grain Size on Intragranular Nucleation of Ferrite in Medium Carbon Microalloyed Steels

... the prior austenite grain boundaries and grows along these boundaries at a rate faster than in the direction normal to ...coarse austenite grains, resulting in a very fine ...the ...

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In situ Observation of Martensite Decomposition in HAZ of Cr Mo Steel Weldment

In situ Observation of Martensite Decomposition in HAZ of Cr Mo Steel Weldment

... Abstract. In-situ observation of martensite decomposition at Heat Affected Zone (HAZ) was investigated on a dissimilar joining between 2.25Cr-0.5Mo grade T22 as base material and ER90S-B9 as filler metal using GTAW ...

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Hardenability, transformation and precipitation effects in vanadium steels

Hardenability, transformation and precipitation effects in vanadium steels

... 642) resulted in an increase in the ideal critical diameter, see table 19 and figure 32. Niobium is a strong carbide/nitride forming element and would result in the precipitation of niobium carbides/nitrides in ...

335

Transformation and precipitation in vanadium treated steels

Transformation and precipitation in vanadium treated steels

... the prior austenite grain boundaries and also at the lath boundaries of the martensite grain or bainitic ...of austenite between the original bainite/martensite ...more austenite ...

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The Orientation Distribution of Ferrite Grains Dynamically and Statically Transformed from Heavily Deformed Austenite

The Orientation Distribution of Ferrite Grains Dynamically and Statically Transformed from Heavily Deformed Austenite

... the austenite grains should be considered, when ferrite grains transformed dynamically at the prior austenite grain ...the austenite orientation, due to deformation and the generation ...

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Effect of Grain Refinement on Thermal Stability of Metastable Austenitic Steel

Effect of Grain Refinement on Thermal Stability of Metastable Austenitic Steel

... of austenite that depends on the grain size, morphologies of martensite were observed by means of OM and TEM for the sub-zero treated ...an austenite grain as shown in ...a prior ...

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Observation of Multi Scale Structure for a Creep Fatigued Ferritic 12Cr 2W Steel

Observation of Multi Scale Structure for a Creep Fatigued Ferritic 12Cr 2W Steel

... of prior austenite grains, packets, blocks, subgrains and ...on prior austenite grain boundaries increased markedly and subgrains became coarse during the creep-fatigue test, while the ...

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Effects of heat treatment on morphology, texture and

Effects of heat treatment on morphology, texture and

... smallest retained austenite grain size, while HA steels exhibited larger grain sizes but with similar 217. values despite of the different prior austenite grain sizes[r] ...

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New Model for the Overall Transformation Kinetics of Bainite  Part 1: the Model

New Model for the Overall Transformation Kinetics of Bainite Part 1: the Model

... A new model for the overall transformation kinetics of bainite has been developed. Based on the displacive mechanism for the bainite transformation, the model distinguishes between the nucleation kinetics of bainitic ...

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Impact of various heat treatments on the microstructure evolution and mechanical properties of hot forged 18CrNiMo7-6 steel

Impact of various heat treatments on the microstructure evolution and mechanical properties of hot forged 18CrNiMo7-6 steel

... The prior austenite grain size (PAGS) of the core material is measured using optical micrographs and ImageJ analysis ...the austenite grains transform into high carbon martensite in the case ...

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Grain growth behaviour on reheating Al Nb containing steel in the homogenised condition

Grain growth behaviour on reheating Al Nb containing steel in the homogenised condition

... the prior-austenite grain size (measured manually at least 1000 grains based on the ECD (equivalent circle diameter) method) in the martensitic ...The grain size distribution (in grain ...

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A comparison of microstructure and mechanical properties of low alloy medium carbon steels after quench hardening

A comparison of microstructure and mechanical properties of low alloy medium carbon steels after quench hardening

... Although these processes have been widely studied in the literature, no comparative research has focused on the as-quenched structure of quenched-tempered and quench- hardened low alloy medium carbon steels. It is well ...

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