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The Effect Of Austenitizing Conditions On The Anisotropic Embrittlement Of Esr Electroslag Remelted 4340 Steel
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Book Synopsis The Effect of Austenitizing Conditions on the Anisotropic Embrittlement of ESR (Electroslag Remelted) 4340 Steel by : E. G. Hamburg
Download or read book The Effect of Austenitizing Conditions on the Anisotropic Embrittlement of ESR (Electroslag Remelted) 4340 Steel written by E. G. Hamburg and published by . This book was released on 1986 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of austenitizing conditions on the anisotropic embrittlement of electroslag remelted (ESR) 4340 steel were studied. Increasing austenitzing of temperature from 1550 F to 1750 F had little or no effect on the strength and toughness of ESR melted 4340 steel. Decreasing the quench rate from 1000 F per minute to 500 F per minute had no effect on the strength and toughness. Decreasing the quench rate from 500 F per minute to 100 F per minute had a significant effect on Charpy V-notch toughness. Lower Charpy V-notch toughness associated with the quench rate of 100 F per minute was due to the presence of bainite in the microstructure. The presence of bainite had a small effect on a slow blend fracture toughness. Plate anisotropy was very small in the plane of the plate (longitudinal versus transverse). Properties normal to the plane of the plate were affected drastically. Charpy V-notch toughness was decreased as much as 56% over the values obtained in the longitudinal direction. Reduction in area of the mild notch tensile specimen was decreased as much as 64% in the through-thickness direction when compared to the longitudinal direction. Inclusion clusters were primarily alumina with some calcium present. In all the tests conducted, there was no evidence for anisotropic embrittlement of this material (i.e., intergranular fracture).
Book Synopsis Technical Reports Awareness Circular : TRAC. by :
Download or read book Technical Reports Awareness Circular : TRAC. written by and published by . This book was released on 1987-02 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Anisotropic Embrittlement in High-Hardness ESR 4340 Steel Forgings by : Gregory B. Olson
Download or read book Anisotropic Embrittlement in High-Hardness ESR 4340 Steel Forgings written by Gregory B. Olson and published by . This book was released on 1982 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: ESR 4340 steel forgings tempered to a hardness of HRC 55 exhibit a severe loss of tensile ductility in the short transverse direction which is strain-rate and humidity dependent. The anisotropy is also reflected in blunt-notch Charpy impact energy, but is absent in the sharp-crack fracture toughness. Brittle behavior is associated with regions of smooth intergranular fracture which are aligned with microstructural banding. Scanning Auger microprobe analysis indicates some intergranular segregation of phosphorus and sulfur in these regions. The anisotropic embrittlement is attributed to an interaction of nonequilibrium segregation on solidification with local equilibrium segregation at grain boundaries during austenitizing. This produces defective regions of enhanced intergranular impurity segregation which are oriented during forging. The regions are prone to brittle fracture under impact conditions and abnormal sensitivity to environmental attack during low strain-rate deformation. A relatively sparse distribution of these defects (100 per cu. in.) accounts for the discrepancy between smooth bar and blunt-notch tests versus sharp-crack tests. Isotropic properties are restored by homogenization treatment. For application of these steels at extreme hardness levels, homogenization treatment is essential. (Author).
Book Synopsis Aerospace Structural Metals Handbook by :
Download or read book Aerospace Structural Metals Handbook written by and published by . This book was released on 1989 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metals Abstracts written by and published by . This book was released on 1989-07 with total page 1494 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1987 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Split Heat Mechanical Property Comparison of ESR (Electroslag Remelting) and VAR (Vacuum Arc Remelting) 4340 Steel. Revised by : C. F Hickey (Jr)
Download or read book Split Heat Mechanical Property Comparison of ESR (Electroslag Remelting) and VAR (Vacuum Arc Remelting) 4340 Steel. Revised written by C. F Hickey (Jr) and published by . This book was released on 1983 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report addresses a mechanical property characterization of a split argon-oxygen decarburized (AOD) heat of 4340 steel which was further processed by vacuum arc remelting (VAR) and electroslag remelting (ESR) into 12.7 cm (5 inch) square forgings. Properties examined were hardness, tensile, Charpy V-notch impact, and fracture toughness as a function of tempering temperature over the range of 163 C (325 F) to 649 C (1200 F) for both the longitudinal and transverse orientations. Microstructural aspects are also addressed.
Download or read book CAB written by and published by . This book was released on 1983 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis CAB, Current Awareness Bulletin by :
Download or read book CAB, Current Awareness Bulletin written by and published by . This book was released on 1981 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aerospace Structural Metals Handbook by : Belfour Stulen, Inc. Mechanical Properties Data Center
Download or read book Aerospace Structural Metals Handbook written by Belfour Stulen, Inc. Mechanical Properties Data Center and published by . This book was released on 1970 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government reports annual index by :
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electroslag Technology by : B.I. Medovar
Download or read book Electroslag Technology written by B.I. Medovar and published by Springer Science & Business Media. This book was released on 2013-03-07 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dr. Boris Medovar, a member of the Soviet Academy of Sciences, is a promi nent member of the E.O. Paton Electric Welding Institute in Kiev, one of the pre-eminent institutes of the USSR. The Paton Institute, internationally famous for its entrepreneurial efforts in electrical welding processes, is also famous for its application of electrically based processes in melting and remelting of high alloy and high-temperature materials. These include the ESR (electroslag re melting) process, the ESC (electroslag casting) process, skull remelting based on electron-beam processes, plasma arc processes, and electric arc processes. Along with the ESR process for ingot production is the commercial plasma arc remelt process for specialty steels, particularly where high nitrogen contents may be desired, as in austenitic stainless steels. Major industrial centers are now scattered throughout the USSR and are a major factor in high-alloy, high strength, low- and high-temperature materials. The ESR process was developed in response to the Western development of the VAR (vacuum arc remelting) process for producing very highly alloyed materials during the growth period of the jet engine age. The V AR and ESR processes utilize different purification and refinement processes that are extremely critical in very highly, complexly alloyed superalloys and high-speed tool steels. In water-cooled remelt systems, they also achieve relatively rapid (directional) solidification, minimizing segregation and coarse phase separation of undesir able impurity elements or elements that tend to form coarse brittle phases.
Book Synopsis Government Reports Annual Index: Keyword A-L by :
Download or read book Government Reports Annual Index: Keyword A-L written by and published by . This book was released on 1987 with total page 1260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stainless Steels for Design Engineers by : Michael F. McGuire
Download or read book Stainless Steels for Design Engineers written by Michael F. McGuire and published by ASM International. This book was released on 2008 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rate of growth of stainless steel has outpaced that of other metals and alloys, and by 2010 may surpass aluminum as the second most widely used metal after carbon steel. The 2007 world production of stainless steel was approximately 30,000,000 tons and has nearly doubled in the last ten years. This growth is occurring at the same time that the production of stainless steel continues to become more consolidated. One result of this is a more widespread need to understand stainless steel with fewer resources to provide that information. The concurrent technical evolution in stainless steel and increasing volatility of raw material prices has made it more important for the engineers and designers who use stainless steel to make sound technical judgments about which stainless steels to use and how to use them.
Book Synopsis Welding Metallurgy and Weldability of Nickel-Base Alloys by : John C. Lippold
Download or read book Welding Metallurgy and Weldability of Nickel-Base Alloys written by John C. Lippold and published by John Wiley & Sons. This book was released on 2011-09-20 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most up-to-date coverage of welding metallurgy aspects and weldability issues associated with Ni-base alloys Welding Metallurgy and Weldability of Nickel-Base Alloys describes the fundamental metallurgical principles that control the microstructure and properties of welded Ni-base alloys. It serves as a practical how-to guide that enables engineers to select the proper alloys, filler metals, heat treatments, and welding conditions to ensure that failures are avoided during fabrication and service. Chapter coverage includes: Alloying additions, phase diagrams, and phase stability Solid-solution strengthened Ni-base alloys Precipitation strengthened Ni-base alloys Oxide dispersion strengthened alloys and nickel aluminides Repair welding of Ni-base alloys Dissimilar welding Weldability testing High-chromium alloys used in nuclear power applications With its excellent balance between the fundamentals and practical problem solving, the book serves as an ideal reference for scientists, engineers, and technicians, as well as a textbook for undergraduate and graduate courses in welding metallurgy.
Book Synopsis Tool and Manufacturing Engineers Handbook: Plastic Part Manufacturing by : Philip Mitchell
Download or read book Tool and Manufacturing Engineers Handbook: Plastic Part Manufacturing written by Philip Mitchell and published by Society of Manufacturing Engineers. This book was released on 1996-12-09 with total page 695 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on the practical application of processes for manufacturing plastic products. It includes information on design for manufacturability (DFM), material selection, process selection, dies, molds, and tooling, extrusion, injection molding, blow molding, thermoforming, lamination, rotational molding, casting, foam processing, compression and transfer molding, fiber reinforced processing, assembly and fabrication, quality, plant engineering and maintenance, management.
Book Synopsis Ultrahigh Strength, High Fracture Toughness Low-alloy Steel by :
Download or read book Ultrahigh Strength, High Fracture Toughness Low-alloy Steel written by and published by . This book was released on 2019 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
