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eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2024
ISBN: 978-0-8031-7745-1
... materials. It is mandatory to achieve the necessary high-performance by heat treatment of gears. Today high-performance gears are typically case-hardened to achieve the best performance in service. Due to the metastable characteristics of martensite, the microstructure of a gear can degrade during service...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2024
ISBN: 978-0-8031-7745-1
... Bainitic bearings, produced through an austempering process, have shown great potential as an alternative to traditional, martensitic bearings. Bainite, specifically lower bainite, which is developed through low-temperature isothermal heat treatment, is a steel microconstituent consisting...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2024
ISBN: 978-0-8031-7745-1
... thanks to the ef cient cooperation between metallurgists and manufacturing teams in considering the time to market for new developments. Keywords bearing steels, M50NiL, manufacturing, forging, carburizing, heat treatment, microstructure, precipitation, residual stress, grain size, mechanical properties...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2023
ISBN: 978-0-8031-7737-6
... of solutes in Zircaloy-2 of type LK3/L and a similar model alloy, called Alloy 2, of the same heat treatment. Both alloys were analyzed in the as-produced state and after reactor exposure. In the as-produced materials, the concentrations of iron, chromium, and nickel were all below the detection limits...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2022
ISBN: 978-0-8031-7735-2
... directions examined. Although additional testing and optimization would be necessary, this first trial concludes that deposition parameter modifications will greatly improve isotropy in L-PBF materials. L-PBF heat treatment isotropy additive manufacturing stainless steel HIP tensile charpy...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2022
ISBN: 978-0-8031-7721-5
...-heat-treated, as-built condition is characterized by fatigue properties similar to those of post-treated AISI 4140. The latter, however, is characterized by superior strength under monotonic loading. electron beam melting additive manufacturing microstructure heat treatment mechanical...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2022
ISBN: 978-0-8031-7721-5
.... These process-related discontinuities have an influence on the yield and fracture behavior in local stress concentrations caused by different notches. Therefore, the influence of local stress concentrations caused by different notches on the fracture and yield behavior is studied for different heat treatment...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2020
ISBN: 978-0-8031-7708-6
... formed perpendicular to the base plate. A subsequent heat treatment led to the disappearance of melt pool boundaries while laser tracks were still visible for IN718. Hardness properties were not affected considerably by build direction for both IN718 and HX materials in as-built and heat-treated...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2020
ISBN: 978-0-8031-7692-8
... In this study, steels that had undergone different heat treatments resulting in different microstructures were tested under rolling contact fatigue (RCF) and under specific test conditions known to cause white etching cracks (WECs). The test conditions included high slide-to-roll ratios...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2020
ISBN: 978-0-8031-7686-7
... orientation, and heat treatment. This paper researched the effect of heat treatment on fatigue performance; the remaining effects were held constant. Stress amplitude–number of cycles (S-N) curves—were generated to report fatigue strength and life of the deposits. Fracture surfaces were examined using optical...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2017
ISBN: 978-0-8031-7643-0
.... To effectively assess the corrosion resistance of candidate heat treatments, a rapid screening test is needed. Electrochemical corrosion testing was performed to rank the relative performance of conventional bearing steels including 440C, American Iron and Steel Institute vacuum induction melting vacuum arc...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2012
ISBN: 978-0-8031-7515-0
... transportation or at the beginning of dry storage. ring tensile test transmission electron microscopy internal pressure creep test heat treatment deformation mechanisms Zy-4 Zr-1 % Nb spent nuclear fuel transportation J_ID: DOI: Date: 18-October-11 Stage: Page: 929 Total Pages: 23 Reprinted from...
eBook Chapter
Series: ASTM Manuals
Publisher: ASTM International
Published: 2010
ISBN: 978-0-8031-7018-6
... zirconium alloys ZIRLO Zircaloy-4 tin niobium iron corrosion water steam lithium hydroxide in-reactor corrosion microstructure precipitates fuel cladding heat treatment creep growth PWRs RPS2-EB/Nov 2010 Copyright © 2010 by ASTM International 359 www.astm.org 360 ZIRCONIUM PRODUCTION...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2006
ISBN-10: 0-8031-3497-5
ISBN: 978-0-8031-3497-3
... response heat treatment spinal devices Journal of ASTM International, September 2005, Vol. 2, No. 8 Paper ID JAI13033 Available online at www.astm.org Victor R. Jablokov,1 Michael J. Nutt,2 Marc E. Richelsoph,2 and Howard L. Freese3 The Application of Ti-15Mo Beta Titanium Alloy in High Strength...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2005
ISBN-10: 0-8031-3493-2
ISBN: 978-0-8031-0756-4
... precipitates fuel cladding heat treatment creep growth PWRs Journal of ASTM International, February 2005, Vol. 2, No. 2 Paper ID JAI12942 Available online at www.astm.org George P. Sabol1 ZIRLO An Alloy Development Success ABSTRACT: Significant data and milestones in the development of the ZIRLO2...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2004
ISBN-10: 0-8031-3477-0
ISBN: 978-0-8031-3477-5
... An Fe-9Cr-2W-0.25V-0.07Ta-0.1C (9Cr-2WVTa) steel has a smaller prior-austenite grain size than this same composition without tantalum (9Cr-2WV) when the steels are given a similar heat treatment. Except for prior-austenite grain size, the microstructures of the steels are similar before...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2002
ISBN-10: 0-8031-2895-9
ISBN: 978-0-8031-2895-8
... 119 Sn chemical state heat treatment Hiroyuki Anada, 1 Kiyoko Takeda, 1 Saburo Nasu, 2 Yasuhiro Kobayashi, 2 and Takasi Nakamichi 2 Chemical State Analysis of Sn and Fe in ZrO2 by M6ssbauer Spectroscopy REFERENCE: Anada, H., Takeda, K., Nasu, S., Kobayashi, Y., and Nakamichi, T., "Chemical State...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2002
ISBN-10: 0-8031-2894-0
ISBN: 978-0-8031-2894-1
... Environmental issues are becoming increasingly important as the costs of waste disposal increase and global climate effects of petroleum product usage become more evident. A major problem in the manufacturing of bearing components today is the distortion generated in the heat treatment quenching...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2002
ISBN-10: 0-8031-2894-0
ISBN: 978-0-8031-2894-1
.... These bearings were then fatigue tested with uniform contact stress, speed and clean lubricant with a marginal lubrication film. The performance of different bearing steels and heat treatments were investigated, and test results from the two denting methodologies will be provided. anti-friction bearings...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2001
ISBN-10: 0-8031-2889-4
ISBN: 978-0-8031-2889-7
... and microetching techniques so as to produce a series of free-standing gold thin-films of dimensions 2.5 by 200 by 800 μm supported by copper foil frames. Seven different heat treatments, spanning temperatures from 25 to 300°C and up to 8 h in duration, were studied. In each case, thermal annealing of the samples...