Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Microstructure And Fracture Toughness Of Cast And Forged Ultra High Strength Low Alloy Uhsla Steels
Download Microstructure And Fracture Toughness Of Cast And Forged Ultra High Strength Low Alloy Uhsla Steels full books in PDF, epub, and Kindle. Read online Microstructure And Fracture Toughness Of Cast And Forged Ultra High Strength Low Alloy Uhsla Steels ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Microstructure and Fracture Toughness of Cast and Forged Ultra-High-Strength, Low-Alloy (UHSLA) Steels by : J. Buchar
Download or read book Microstructure and Fracture Toughness of Cast and Forged Ultra-High-Strength, Low-Alloy (UHSLA) Steels written by J. Buchar and published by . This book was released on 1990 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes the fracture toughness and microstructure relations for ultra-high-strength, low-alloy (UHSLA) steels corresponding to AISI 4340 composition. The steels were either cast or forged, heat treated at austenitizing temperatures from 840 to 1100°C, oil quenched and tempered at 180 and 650°C. Fracture toughness, tensile, and Charpy impact toughness tests, and testing of apparent fracture toughness under the influence of notch root radius, were performed simultaneously. Investigation of microstructures and corresponding mechanical properties, as well as fractographic examinations and evaluation of chemical heterogeneity, made it possible to elucidate the alteration of fracture behavior.
Book Synopsis Microstructure and Fracture Toughness of a High-strength Low-alloy Steel by : Marie Therese Miglin
Download or read book Microstructure and Fracture Toughness of a High-strength Low-alloy Steel written by Marie Therese Miglin and published by . This book was released on 1982 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Metallurgical Origins of Fracture Toughness and Microstructure and Fracture Toughness of an HSLA (High-Strength/Low-Alloy) Steel by : A. R. Rosenfield
Download or read book Metallurgical Origins of Fracture Toughness and Microstructure and Fracture Toughness of an HSLA (High-Strength/Low-Alloy) Steel written by A. R. Rosenfield and published by . This book was released on 1985 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report discusses effects of composition and heat treatment on the fracture behavior of a group of steels based on ASTM A712A. Very low transition temperatures were observed in a number of cases. However, adverse effects of Cu on the K sub Ic value for cleavage and on the sharpness of the ductile/brittle transition are noted. At ambient temperatures, overaged Cu particles are beneficial for ductile fracture resistance. A new experimental method of evaluating the relative contributions of opening and shear to ductile crack growth was developed, along with a superdislocation model of the process. Keywords: Steel, high-strength/low alloy; Microstructural effects; Compositional effects; Fracture statistics; Constitutive Modelling.
Book Synopsis Processing, Microstructure and Properties of HSLA Steels by : Anthony J. DeArdo
Download or read book Processing, Microstructure and Properties of HSLA Steels written by Anthony J. DeArdo and published by . This book was released on 1988 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of Fracture Toughness Mechanism in Ultra-fine-grained Steels by : Toshihiro Hanamura
Download or read book Analysis of Fracture Toughness Mechanism in Ultra-fine-grained Steels written by Toshihiro Hanamura and published by Springer. This book was released on 2014-09-04 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, advanced steel technologies mainly developed at the National Institute for Materials Science (NIMS), Japan, for structure control, mechanical properties, and the related mechanisms are introduced and discussed. NIMS has long worked on developing advanced steel techniques, namely, producing advanced steels by using only simple alloying elements such as carbon, manganese, and silicon, and also by utilizing steel scrap. The hope is that this approach will lead to a technology of a so-called steel-to-steel recycling process, with the ultimate goal of a recycling process such as an automotive-steel-to-automotive-steel recycling process to take the place of the current cascade-type recycling system. The main idea is to utilize ultra-grain refining structures and hetero structures as well as martensite structures. In particular, the focus of this book is on tensile strength and toughness of advanced steels from both the fundamental and engineering points of view. Fundamentally, a unique approach to analysis is taken, based on fracture surface energy as effective grain size is employed to better understand the mechanism of property improvement. From the engineering point of view, in fracture toughness such factors as crack tip opening displacement (CTOD) of advanced steels are evaluated in comparison with those of conventional steels.
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:
Book Synopsis The Relationship of Microstructure to Strength and Toughness in High-strength Steel by : John Henry Bucher
Download or read book The Relationship of Microstructure to Strength and Toughness in High-strength Steel written by John Henry Bucher and published by . This book was released on 1965 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report deals with the relationship of elements of microstructure to the fracture characteristics of a group of commercially produced steels, heat-treated to ultra-high strength levels. The microstructures were characterized in terms of optical microscopy, electron diffraction, and electron fractography. Fractographic studies were made of fractured surfaces broken in impact at +25 and -196 C as a function of tempering temperature, in slow bending at ambient temperature, in a modified bend test in which slow and fast propagation stages were effected, and on surfaces produced in tensile fractures. The fracture characteristics were studied by means of an instrumented bend test and in terms of the plastic instability generated in the torsion test. The instrumented bend test yielded data on criteria for the onset of slow crack propagation and for the onset of rapid propagation, including the effect of the total stored energy in the system. Plastic instability in torsion was studied as a function of specimen section size in AISI 4340 steel. A 250,000 psi yield strength Maraging steel was studied in a standard size test bar. (Author).
Book Synopsis Fracture Toughness Characteristics of the New Weldable Steels of 180- to 210-Ksi Yield Strengths by : Peter P. Puzak
Download or read book Fracture Toughness Characteristics of the New Weldable Steels of 180- to 210-Ksi Yield Strengths written by Peter P. Puzak and published by . This book was released on 1969 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The yield strength range for steels from 180 to 210 ksi is currently covered by four weldable alloys of the following nominal chemical analysis: 18%Ni-8%Co-3%Mo maraging steel, 12%Ni-5%Cr-3%Mo maraging steel, 9%Ni-4%Co-0.20%C quenched and tempered (Q and T) steel, and 10%Ni-8%Co-2%Cr-1%Mo-0.10%C Q and T steel. Broad ranges of fracture resistance have been reported for these materials based on various fracture tests, and this report presents information for material selection and design guidance by providing an analysis of the interactions between the metallurgical and mechanical parameters that contribute to the fracture resistance of plate products. Definitions of the interaction between the metallurgical and the mechanical aspects are developed with the use of the Dynamic Tear (DT) test and the Ratio Analysis Diagram (RAD). (Author).
Book Synopsis Structure and Properties of Ultrahigh-strength Steels by :
Download or read book Structure and Properties of Ultrahigh-strength Steels written by and published by . This book was released on 1965 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Microstructure on the Fracture Toughness of Low-alloy Steels by : Syavash Ensha
Download or read book The Effect of Microstructure on the Fracture Toughness of Low-alloy Steels written by Syavash Ensha and published by . This book was released on 1974 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: A theoretical model has been used to relate the cleavage fracture toughness of the low-alloy steels to their microstructure. The cleavage fracture toughness of low-alloy steels depends upon three metallurgical parameters: the microscopic cleavage strength, the yield strength, and the effective root radius. Variations in fracture toughness with microstructure can be explained through the effect of the microstructure on these parameters. The major objective of this investigation has been the study of the effect of microstructural variables on these parameters, and hence the effect of microstructure on fracture toughness. The theoretical model for the cleavage fracture toughness of the low-alloy steels can be successfully applied provided the assumptions are not strongly violated. This requires low microscopic cleavage strength/yield strength ratio values and low work-hardening rates. Lower temperatures and higher strain rates both favor these conditions. (Modified author abstract).
Book Synopsis Microstructure and Fracture Toughness of a High-strengthlow-alloy Steel by : Marie Therese Miglin
Download or read book Microstructure and Fracture Toughness of a High-strengthlow-alloy Steel written by Marie Therese Miglin and published by . This book was released on 1987 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microstructure-fracture and Fatigue Behavior of Ti-Nb High Strength Low Alloy (HSLA) Steels by : Kaushal R. Prayakarao
Download or read book Microstructure-fracture and Fatigue Behavior of Ti-Nb High Strength Low Alloy (HSLA) Steels written by Kaushal R. Prayakarao and published by . This book was released on 2012 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Toughness Characterization and Specifications for HSLA and Structural Steels by : P. L. Mangonon
Download or read book Toughness Characterization and Specifications for HSLA and Structural Steels written by P. L. Mangonon and published by . This book was released on 1979 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fracture Toughness of High-strength Steels for Military Applications by : J. E. Campbell
Download or read book Fracture Toughness of High-strength Steels for Military Applications written by J. E. Campbell and published by . This book was released on 1968 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Memorandum discusses the current situation on the inclusion of fracture-toughness testing requirements in specifications for high-strength steels used for military applications. The Memorandum was prepared at the request of The Technical Cooperation Program (TTCP), and contains information from Canadian and British members of that program, as well as U.S. information. Military applications discussed include missile motor cases, aircraft landing gear, gun tubes, armor plate, and hydrofoils. (Author).
Book Synopsis Dynamic Fracture Toughness (DFT) of Banded HSLA Steels by : P. Shanmugam
Download or read book Dynamic Fracture Toughness (DFT) of Banded HSLA Steels written by P. Shanmugam and published by . This book was released on 1995 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic fracture toughness (DFT) evaluation by instrumented impact analysis has been emerging as a time- and material-conservative technique.The present investigation attempts to assess DFT of a high strength low alloy (HSLA) steel showing alternate layers of ferrite and pearlite in microstructure.The banded microstructure has given rise to an irregular stable crack front which shows spikes and splits.Three approaches to evaluate DFT, namely, premaximum energy, compliance changing rate (CCR), and the low blow test method, have been analyzed and compared to assess applicability in the case of irregular crack front.The curve fitting analysis of data justifies the power law fit to give conservative DFT values.The effects of a/w and impact velocity have been investigated.Attempts have also been made to calculate dynamic CTOD from load-displacement curves.Single specimen CCR technique obviates the need for stable crack growth (?a) measurements and predicts conservative DFT values comparable to DFT values obtained from the low blow test method.Erratum to this paper appears in 23(2).
Book Synopsis Untempered Ultra High Strength Steels of High Fracture Toughness by : Earl Randall Parker
Download or read book Untempered Ultra High Strength Steels of High Fracture Toughness written by Earl Randall Parker and published by . This book was released on 1974 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the present investigation was to establish, in high yield strength steels, relationships between microstructure, fracture toughness and fatigue crack growth. Extensive microstructural examination and characterization were conducted on as-quenched, and quenched and tempered AISI 4340 steel which was austenitized both at the conventional (870C) and the high (1200C) austenitizing temperatures. Changes in fracture toughness resulting from variations in austenitizing and tempering treatments were related to changes in the amount and distribution of retained austenite, the morphology and distribution of carbides, and the martensite substructure and morphology. The influence of microstructure on fatigue crack propagation was investigated in as-quenched, and quenched and tempered 5Mo-0.3C secondary hardening steel. (Modified author abstract).
Book Synopsis Fracture Toughness Improvement of Lower Bainite in Ultra High Strength Low Alloy Steels by : Lu Fang
Download or read book Fracture Toughness Improvement of Lower Bainite in Ultra High Strength Low Alloy Steels written by Lu Fang and published by . This book was released on 1994 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
