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Book Chapter

The Relationship between the ASTM Grain Size and the Average “Diameter” of the Grain

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1996
DOI: 10.31399/asm.tb.phtpclas.t64560439
EISBN: 978-1-62708-353-9
... Abstract This appendix lists the relationship between the ASTM grain size and the average "diameter" of the grain. diameter grain size This appendix is a table adapted from the 1966 Annual Book of ASTM Standards , Part 31, American Society for Testing and Materials, Philadelphia...
Abstract
This appendix lists the relationship between the ASTM grain size and the average "diameter" of the grain.
View PDF for content titled, The Relationship between the ASTM <span class="search-highlight">Grain</span> <span class="search-highlight">Size</span> and the Average “Diameter” of the <span class="search-highlight">Grain</span>
Book Chapter

Control of Grain Size by Heat Treatment and Forging

Available to Purchase

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140071
EISBN: 978-1-62708-264-8
... Abstract Grain size has a determining effect on the mechanical properties of steel and responds favorably to forging and heat treating. This chapter explains how to measure and quantify grain size and how to control it through thermal cycling and forging operations. It describes how surface...
Abstract
Grain size has a determining effect on the mechanical properties of steel and responds favorably to forging and heat treating. This chapter explains how to measure and quantify grain size and how to control it through thermal cycling and forging operations. It describes how surface tension acting on grain-boundary segments contributes to grain growth and how the formation of new grains, driven by phase transformations and recrystallization, lead to a reduction in average grain size. It also discusses the effect of alloying elements on grain growth rates, particularly the curbing effect of particle and solute drag.
View PDF for content titled, Control of <span class="search-highlight">Grain</span> <span class="search-highlight">Size</span> by Heat Treatment and Forging
Image

Comparison of nominal ASTM 6 to 9 grain size (with calculated grain size nu...

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in Influential Microstructural Features > Carburizing: Microstructures and Properties
Published: 01 December 1999
Fig. 5.7 Comparison of nominal ASTM 6 to 9 grain size (with calculated grain size numbers of 6.08, 7.13, 8.03, and 8.97, respectively). Nital etch, 100× More
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Grain size No. 8. Upper, idealized hexagonal network for mean grain size No...

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in Heat Treating Basics > Practical Induction Heat Treating
Published: 01 August 2015
Fig. 5.27 Grain size No. 8. Upper, idealized hexagonal network for mean grain size No. 8, ASTM scale, 128 grains/in. 2 . Lower, ASTM standard grain size No. 8, 96 to 192 grains/in. 2 . 50×. Source: Ref 11 More
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Grain size No. 3. Left, idealized hexagonal network for mean grain size No....

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in Heat Treating Basics > Practical Induction Heat Treating
Published: 01 August 2015
Fig. 5.28 Grain size No. 3. Left, idealized hexagonal network for mean grain size No. 3, ASTM scale, 4 grains/in. 2 . Right, ASTM standard grain size No. 3, 3 to 6 grains/in. 2 . 50×. Source: Ref 11 More
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Austenite grain size (as measured by ASTM grain size number) in H13 tool st...

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in Hot-Work Tool Steels > Tool Steels
Published: 01 January 1998
Fig. 13-9 Austenite grain size (as measured by ASTM grain size number) in H13 tool steel as a function of austenitizing temperature for specimens soaked for various times. Source: Ref 6 More
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Effect of temperature on the BeO particle size and grain size of high-purit...

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in Mechanical Properties of Beryllium > Beryllium Chemistry and Processing
Published: 01 July 2009
Fig. 17.59 Effect of temperature on the BeO particle size and grain size of high-purity hot isostatically pressed beryllium. Source: Borch 1979 More
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Relationship between austenitizing parameters and grain size for grain-refi...

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in Influential Microstructural Features > Carburizing: Microstructures and Properties
Published: 01 December 1999
Fig. 5.3 Relationship between austenitizing parameters and grain size for grain-refined and non-grain-refined AISI 1060 steel. (a) Effect of austenitizing temperature (2 h soak). (b) Effect of austenitizing time. Source: Ref 5 More
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Creep deformation maps for MAR-M200. (a) Grain size = 100 μm. (b) Grain siz...

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in Creep Under Monotonic and Cyclic Loading > Fatigue and Durability of Metals at High Temperatures
Published: 01 July 2009
Fig. 1.10 Creep deformation maps for MAR-M200. (a) Grain size = 100 μm. (b) Grain size = 1 cm. Source: Ref 1.7 More
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Effect of annealing temperature on grain size of Ti-5Al-2.5Sn. Grain growth...

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in Deformation and Recrystallization of Titanium and Its Alloys[1] > Titanium: Physical Metallurgy, Processing, and Applications
Published: 01 January 2015
Fig. 5.25 Effect of annealing temperature on grain size of Ti-5Al-2.5Sn. Grain growth is very rapid at the beta transus temperature (1015 °C, or 1860 °F) and higher. More
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Superplastic forming is strongly dependent on grain size. Effect of grain s...

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in Forming of Titanium Plate, Sheet, Strip, and Tubing[1] > Titanium: Physical Metallurgy, Processing, and Applications
Published: 01 January 2015
Fig. 11.8 Superplastic forming is strongly dependent on grain size. Effect of grain size on (a) strain rate of superplastic deformation for Ti-6Al-4V and Ti-5Al-2.5Sn alloys and (b) superplastic deformation temperature for Ti-6.5Al-3.3Mo-1.8Zr-0.26Si alloy More
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Prior-austenite grain structure showing large difference in grain size in a...

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in Austenite in Steel > Steels: Processing, Structure, and Performance
Published: 01 January 2015
Fig. 8.20 Prior-austenite grain structure showing large difference in grain size in an SAE 8620 steel subjected to a simulated carburizing treatment after specimen has been cold worked 75%. Light micrograph; special picral etch. Source: Ref 8.34 More
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Logarithmic plot of grain size versus time to show grain growth behavior fo...

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in Sintering Concepts Relevant to Greater Density and Improved Properties > Powder Metallurgy and Additive Manufacturing: Fundamentals and Advancements
Published: 30 September 2024
Fig. 6.14 Logarithmic plot of grain size versus time to show grain growth behavior for copper during isothermal sintering at 850 °C (1560 °F). The slope of the graph shows that mean grain volume is a linear function of hold time. More
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Variation of FATT with austenitic grain size at fixed hardness and impurity...

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in Toughness > Damage Mechanisms and Life Assessment of High-Temperature Components
Published: 01 December 1989
Fig. 2.31. Variation of FATT with austenitic grain size at fixed hardness and impurity levels ( Ref 85 ). More
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Influence of mean grain size on the fatigue strength of alpha brass at 10 8...

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in Avoidance, Control, and Repair of Fatigue Damage[1] > Fatigue and Durability of Structural Materials
Published: 01 March 2006
Fig. 11.8 Influence of mean grain size on the fatigue strength of alpha brass at 10 8 cycles. Source: Ref 11.13 More
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Effect of grain size on yield strength of various alloys. Source: Ref A.41...

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in Selected Relevant Background Information > Fatigue and Durability of Structural Materials
Published: 01 March 2006
Fig. A.32 Effect of grain size on yield strength of various alloys. Source: Ref A.41 More
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Austenitic grain size and bending fatigue strength of a typical gear steel

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in Carburizing and Hardening Gears > Heat Treatment of Gears: A Practical Guide for Engineers
Published: 01 December 2000
Fig. 5.17 Austenitic grain size and bending fatigue strength of a typical gear steel More
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Effect of carbon and silicon on grain size control of 665M17 steel made by ...

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in Influential Microstructural Features > Carburizing: Microstructures and Properties
Published: 01 December 1999
Fig. 5.2 Effect of carbon and silicon on grain size control of 665M17 steel made by basic electric-arc process with aluminum addition of 16 oz/ton. Source: Ref 4 More
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Hardness vs. grain size. Steel composition: 0.82C, 0.9Mn, 0.31 Si, 1.76Ni, ...

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in Influential Microstructural Features > Carburizing: Microstructures and Properties
Published: 01 December 1999
Fig. 5.8 Hardness vs. grain size. Steel composition: 0.82C, 0.9Mn, 0.31 Si, 1.76Ni, 0.72Mo, and Cr (per table). Source: Ref 17 Retained austenite, % Cr, % Reheat and quench Direct quench ○ 0 25 23 • 0.3 25 20 Δ 0.6 35 23 ▴ 1.3 32 32 □ 0.9 39 39 More
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Variation of hardness with ferrite grain size. Source: Ref 18

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in Influential Microstructural Features > Carburizing: Microstructures and Properties
Published: 01 December 1999
Fig. 5.9 Variation of hardness with ferrite grain size. Source: Ref 18 More