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Austenite - an overview | ScienceDirect Topics
- https://www.sciencedirect.com/topics/materials-science/austenite
- Most austenite grains formed at pearlite bands, while a small amount of austenite had already nucleated at grain boundaries as well as inside ferrite grains. It is worth noting the solute drag effect was taken into account in Zhu and Militzer model to evaluate the effects of substitutional alloying elements on austenite formation.
Prior Austenite Grain - an overview | ScienceDirect Topics
- https://www.sciencedirect.com/topics/engineering/prior-austenite-grain
- Intergranular fracture along prior-austenite grain boundaries is the most common fracture mode for IHE, HEE and LME of high-strength steels. For normal metalloid-impurity contents, especially in steels tempered in the range where impurity segregation is prone to occur, SEM indicates that intergranular fracture surfaces are featureless in areas between ridges and isolated dimples …
Determining austenite grain size | Thermal Processing …
- https://thermalprocessing.com/determining-austenite-grain-size/
- January 15, 2020. Grain size is a critical metallurgical characteristic, significantly influencing design parameters such as strength and toughness. Austenite grain size (often referred to as prior-austenite grain size) is of particular interest to users of heat-treated plain-carbon and low-alloy steel components — so much so that industry standards such as ASTM E …
Revealing Prior-Austenite Grain Boundaries - Vacaero
- https://vacaero.com/information-resources/metallography-with-george-vander-voort/1405-revealing-prior-austenite-grain-boundaries.html
- Revealing prior-austenite grain boundaries has been one of the most difficult and most frustrating tasks assigned to the metallography/materialography laboratory. The most successful etch had been the saturated aqueous picric acid containing a wetting agent, usually sodium dodecyl benzene sulfonate, at room temperature for periods of 4-20 minutes.
Revealing Prior-Austenite Grain Boundaries (Presentation)
- https://www.georgevandervoort.com/revealing-prior-austenite-grain-boundaries-presentation/
- Depending upon the steel composition, a variety of procedures can be used to decorate the prior-austenite grain boundaries –if the steel can be heat treated. Examples include ferrite or cementite decorating the grain boundaries after slow cooling or after carburizing, or using the oxidation method. If the specimen can not be heat treated, as ...
Austenite grain size vs. temperature. | Download …
- https://www.researchgate.net/figure/Austenite-grain-size-vs-temperature_fig3_289417443
- Download scientific diagram | Austenite grain size vs. temperature. from publication: Influence of Microalloying Elements (Nb, V, Ti) on Yield Strength in Bainitic Steels | In order to study the ...
Austenite Grain Growth Behavior after Recrystallization ... - OnePetro
- https://onepetro.org/IJOPE/article/29/04/494/26676/Austenite-Grain-Growth-Behavior-after
- To obtain austenite grains with these desirable characteristics, alloy elements such as niobium (Nb), titanium (Ti), and molybdenum (Mo) are added to steels. These steels are called microalloyed steels. It is well known that grain growth and recrystallization are affected by these alloy elements because of the solute-drag effect of solute atoms ...
Austenite Martensite Bainite Pearlite and Ferrite structures
- https://www.twi-global.com/technical-knowledge/faqs/faq-what-are-the-microstructural-constituents-austenite-martensite-bainite-pearlite-and-ferrite
- Austenite and ferrite. Austenite was originally used to describe an iron-carbon alloy, in which the iron was in the face-centred-cubic (gamma-iron) form. It is now a term used for all iron alloys with a basis of gamma-iron. Austenite in iron-carbon alloys is generally only evident above 723°C, and below 1500°C, depending on carbon content.
Pinning of Austenite Grain Boundaries by | IBOOK.PUB
- https://ibook.pub/pinning-of-austenite-grain-boundaries-by.html
- Here, 3, is the grain-boundary free energy,/~ is the average radius of spherical grains, ~b is the volume fraction of the second-phase particles, and r is the average particle radius. In the years since, a number of efforts have been made to improve on Zener's model by relaxing some of the assumptions originally made to simplify the problem.
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