1-20 of 48 Search Results for

crystallography

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Image
Published: 01 June 1983
Figure 9.30 Crystallography of surface martensite. Two sides of the grain at right angles to each other are shown for an Fe–28 wt.% Ni alloy. Traces of martensite crystals and their respective f.c.c. directions and planar traces are indicated. More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410017
EISBN: 978-1-62708-265-5
... This chapter describes the iron-carbon phase diagram, its modification by alloying elements, and the effect of carbon on the chemistry and crystallography of austenite, ferrite, and cementite found in Fe-C alloys and steels. It also lays the groundwork for understanding important metallurgical...
Image
Published: 01 August 2018
Fig. 9.13 A schematic representation illustrating how it is possible for martensite (α′) to maintain macroscopic coherency with the surrounding austenite (γ). For this to happen, martensite must form with well-defined crystallography in relation to the parent austenite, as discussed More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410063
EISBN: 978-1-62708-265-5
... 5.32 Crystallography of Martensitic Transformation The diffusionless, shear mechanism of martensitic transformation requires good crystallographic coupling between the parent and product phases. Two important crystallographic parameters or characteristics emphasize this interrelationship...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030167
EISBN: 978-1-62708-282-2
.... This is the case for most aluminum alloys. Alloying elements that are typically used to increase the corrosion resistance have low solubility in aluminum when alloyed using conventional techniques. Metallurgical Factors In addition to alloying, there are metallurgical factors, such as crystallography, grain...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240625
EISBN: 978-1-62708-251-8
... for the fcc structure, CN = 12, is the same as that for the hcp structure. A basic rule of crystallography is that if the coordination numbers of two different unit cells are the same, then they will both have the same packing factors. It should also be noted that both the fcc and hcp structures are what...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860295
EISBN: 978-1-62708-348-5
... are visible. Note the Irregularity of one side of each crystal. Figure 9.30 Crystallography of surface martensite. Two sides of the grain at right angles to each other are shown for an Fe–28 wt.% Ni alloy. Traces of martensite crystals and their respective f.c.c. directions and planar traces...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030115
EISBN: 978-1-62708-349-2
.... Bloss F.D. , An Introduction to the Methods of Optical Crystallography , Saunders College Publishers , Philadelphia, PA , 1989 8. Kerr P.F. , Optical Mineralogy , McGraw-Hill Co , New York, NY , 1977 9. Mason C.W. , Handbook of Chemical Microscopy , 4th ed. , John...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900045
EISBN: 978-1-62708-358-4
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410001
EISBN: 978-1-62708-265-5
..., and distribution of microstructural features but also the crystallography and the chemistry of the features. The availability of these instruments and how and what they reveal makes possible more and more complete characterization of steel structures. Examples of the structures shown by the various techniques...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.tm.t52320001
EISBN: 978-1-62708-357-7
.... However, his contribution is just an episode in the history of understanding microstructure because it occurred before basic concepts of crystallography were established, such as Miller index (1839) and Bravais lattice (1848) ( Ref 6 ). On the other hand, Sorby, born and raised in the town of iron...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410621
EISBN: 978-1-62708-265-5
... martensite in H-13 steel tempered at 550 °C (1022 °F). Fig. 24.17 Alloy carbides in a lath of martensite in H-13 tool steel tempered 100 h at 550 °C (1022 °F). Transmission electron micrograph. Courtesy of J.R.T. Branco, Colorado School of Mines The crystallography and composition of the alloy...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900001
EISBN: 978-1-62708-358-4
... considerable experimentation, chance, intuition, and perceptive observation. Indeed, the production of hardened tool steels must be considered truly impressive. It was accomplished without analytical instruments or scientific understanding of chemistry, crystallography, or microstructure. Iron can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.9781627082518
EISBN: 978-1-62708-251-8
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.tm.9781627083577
EISBN: 978-1-62708-357-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220193
EISBN: 978-1-62708-259-4
...′) to maintain macroscopic coherency with the surrounding austenite (γ). For this to happen, martensite must form with well-defined crystallography in relation to the parent austenite, as discussed, for instance in Ref 7 . Micrographic evaluation indicates that the orientation of the martensite “needles...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870375
EISBN: 978-1-62708-344-7
... – 14 10.1520/STP32032S A.66 Halford G.R. , “Stored Energy of Cold Work Changes Induced by Cyclic Deformation,” Ph.D. thesis , Department of Theoretical and Applied Mechanics , University of Illinois, Urbana-Champaign , 1966 Crystallography Introduction Microstructural...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240003
EISBN: 978-1-62708-251-8
... factor is 0.74. Note that this is the same packing factor as was obtained for the fcc structure. Also, the coordination number obtained for the hcp structure (CN = 12) is the same as that for the fcc structure. A basic rule of crystallography is that if the coordination numbers of two different unit...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930003
EISBN: 978-1-62708-359-1
... grain structure and the welding conditions. Initial growth occurs epitaxially at the partially melted grains. Both growth crystallography and thermal conditions can strongly influence the development of grain structure in the weld metal by favoring a strong grain-growth selection process. Growth...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220085
EISBN: 978-1-62708-259-4
... and 8 . Even the simplest images obtained by TEM require knowledge of phase crystallography and of the TEM technique to be properly interpreted. Important aspects of TEM technique are: It is possible to obtain diffraction patterns from extremely small particles in the sample...