1-20 of 91 Search Results for

grain refinement

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
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001270
EISBN: 978-1-62708-215-0
... forged with material that was aluminum grain refined with an aluminum content of 0.022%, vanadium grain refined with a vanadium content of 0.03%, and vanadium grain refined with a vanadium content of greater than 0.06%. Samples of each were examined after forging. The aluminum-grain-refined parts...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047125
EISBN: 978-1-62708-217-4
...), major points of crack arrestment (1 to 5), and total crack length (between 5s). Arrow 6 indicates an undissolved grain refiner. Dimensions given in inches Investigation The portion of the hub that contained the crack was broken open to reveal the fracture surface. The area in which the crack...
Image
Published: 01 June 2019
Fig. 9 Microstructure of transverse section through a weld position. The light region shows evidence of grain refining but no melting and resolidification (90×, 2% nital) More
Image
Published: 01 June 2019
, a macrograph of the fracture surface, shows the origin of the fatigue crack (0), major points of crack arrestment (1 to 5), and total crack length (between 5s). Arrow 6 indicates an undissolved grain refiner. Dimensions given in inches More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001514
EISBN: 978-1-62708-218-1
... flange. The darker and small grained microstructure is that of the original condition of the sheet metal. The lighter colored regions showing grain refining and coarse grain structure, constitute a heat affected zone. This microstructure is a consequence of thermal annealing. There is no microstructural...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c0065825
EISBN: 978-1-62708-228-0
..., sulfur content, and grain refining additives, required steelmaking technology enhancements. Improved steel processing procedures, chiefly hot-working temperature and deformation control, were also required to optimize microstructure and properties. References References 1. Fearnehough G.D...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001123
EISBN: 978-1-62708-214-3
... refinement, because aluminum would tend to segregate to the grain boundaries and impede grain growth. Aluminum, however, would oxidize under a humid atmosphere. From the surface layer to the interior, oxygen diffusion along the grain boundaries was aided by the presence of aluniinum. If the aluminum content...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001328
EISBN: 978-1-62708-215-0
... Fig. 1 Schematic of pigtail connection Fig. 2 Close-up of actual pigtail showing deformation due to applied moment Fig. 3 SEM photograph showing grain boundary and matrix precipitates Fig. 4 Photomicrograph showing intergranular oxidation, grain boundary...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001809
EISBN: 978-1-62708-241-9
... of iron acts as a grain refiner and also increases the yield strength [ 1 ]. The use of these three alloying elements creates a metallurgically complex alloy that needs to be strictly controlled to obtain all of the desired properties. Without the proper fabrication procedures, the corrosion resistant...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001353
EISBN: 978-1-62708-215-0
..., as indicated by Charpy impact testing (35.3 J, or 26 ft . lbf). Grain refinement during normalizing greatly improved the impact strength of the plate material, with a minor change in tensile properties. Temperature variations in the seawater due to climatic changes had little effect on the impact properties...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0089752
EISBN: 978-1-62708-219-8
... fully killed ingots made with a grain-refining practice and normalized after rolling, which provided a ductile-to-brittle transition temperature of approximately −32 °C (−25 °F). Acknowledgments The following authors and contributors of previous editions provided substantial content used...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001484
EISBN: 978-1-62708-229-7
... . The structure at location X in Figure 2 , within the heat-affected zone, is depicted in Figure 6 , where it can he seen that some grain refining had taken place, the temperature attained in this region being of the order of 825°C. Fig. 4 Microstructure at location of crack. (×150). Fig. 5...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001037
EISBN: 978-1-62708-214-3
... was attributed primarily to poor heat treatment, resulting in a brittle grain-boundary network of cementite, and to a design that had a raised central section of the inner diameter whose fillets were locations of high stress concentration. Rough machining of the inner diameter and an excessively deep case also...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001269
EISBN: 978-1-62708-215-0
... network must be dispersed and refined during hot working of the original bar of material, the hobs were not salvageable. Minor factors contributing to the hob failures were premature wear resulting from lower matrix hardness and high sulfur content of the material, which contributed to lower ductility...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003540
EISBN: 978-1-62708-180-1
...-boundary regions for improved strength. Moreover, because a greater number of arbitrarily aligned grains are achieved when grain size is reduced, the stressed material has more opportunity to allow slip and thus improve ductility. Thus, grain-size refinement provides a means for an increase of both...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001907
EISBN: 978-1-62708-217-4
... results in a grain flow that follows the contour of the part and offers three distinct advantages compared to a part that was machined: enhanced directional strength, structural integrity, and dynamic properties. 1 By refining the grain structure and developing optimum grain flow, forging promotes...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0045988
EISBN: 978-1-62708-235-8
... (1050 °F) for 2 h. Slow-bend tests and metallographic examination were performed on both specimens. The specimen from the failed strap exhibited restored bend ductility and a refined grain size of ASTM 5 to 6. The specimen from the unfailed strap, originally a ductile material, fractured by cleavage...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006777
EISBN: 978-1-62708-295-2
... strength. Moreover, because a greater number of arbitrarily aligned grains are achieved when grain size is reduced, the stressed material has more opportunity to allow slip and thus improve ductility. Thus, grain-size refinement provides a means for an increase of both strength and ductility (toughness...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0046911
EISBN: 978-1-62708-227-3
... metal arc welding was relatively low in silicon content, and because completion of the weld required four manual passes, the lesser amount of weld metal deposited during each pass solidified quickly, thereby limiting dissolution of silicon. Finally, each pass refined the ferrite grain developed...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001816
EISBN: 978-1-62708-241-9
... 9. Mukherjee K. , Hazra S.S. , Militzer M. : Grain refinement in dual-phase steels . Metall. Mater. Trans. A 40A , 2145 – 2159 ( 2009 ) 10.1007/s11661-009-9899-9 10. Quintana M.J. , Gonzalez R. , Verdeja L.F. , Verdeja J.I. : Dual-phase ultrafine...