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grain size
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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...
Book Chapter
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.
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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
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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
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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×
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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
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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
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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
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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.
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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
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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
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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.
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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
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in Conventional Heat Treatments—Usual Constituents and Their Formation
> Metallography of Steels: Interpretation of Structure and the Effects of Processing
Published: 01 August 2018
Fig. 9.47 The influence of austenitic grain size on the TTT curve of a steel containing C = 0.87%, Mn = 0.3%, and V = 0.27%. Source: Adapted from Ref 51
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in Conventional Heat Treatments—Usual Constituents and Their Formation
> Metallography of Steels: Interpretation of Structure and the Effects of Processing
Published: 01 August 2018
Fig. 9.48 The effect of austenitization temperature on the austenitic grain size for the same holding time at temperature for a silicon-deoxidized steel. Source: Adapted from Ref 52
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in Conventional Heat Treatments—Usual Constituents and Their Formation
> Metallography of Steels: Interpretation of Structure and the Effects of Processing
Published: 01 August 2018
Fig. 9.55 Standard deviation of the measured austenitic grain size in different combinations of time and temperature for austenitization. Steel containing C = 0.46%, Mn = 0.7%, Al = 0.02%, and N = 32 ppm. The spread in the grain size distribution increases in the temperature range where
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in Conventional Heat Treatment—Basic Concepts
> Metallography of Steels: Interpretation of Structure and the Effects of Processing
Published: 01 August 2018
Fig. 10.21 Austenitic grain size as a function of the number of normalizing cycles for the steel in Fig. 10.20 . Average of approximately 500 measurements per sample. 95% confidence intervals for the average are plotted. Source: Ref 14
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Published: 01 June 2008
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Published: 01 June 2008
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Published: 01 June 2008
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