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Author : Marie Therese Miglin
Publisher :
ISBN 13 :
Total Pages : 308 pages
Book Rating : 4.:/5 (984 download)
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:
Author : A. R. Rosenfield
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (227 download)
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.
Author : J. Buchar
Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (125 download)
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.
Author : Syavash Ensha
Publisher :
ISBN 13 :
Total Pages : 198 pages
Book Rating : 4.:/5 (227 download)
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).
Author : Marie Therese Miglin
Publisher :
ISBN 13 :
Total Pages : 153 pages
Book Rating : 4.:/5 (473 download)
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:
Author : Anthony J. DeArdo
Publisher :
ISBN 13 :
Total Pages : 534 pages
Book Rating : 4.F/5 ( download)
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:
Author : John Henry Bucher
Publisher :
ISBN 13 :
Total Pages : 138 pages
Book Rating : 4.3/5 (91 download)
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).
Author : Ricardo Branco
Publisher : MDPI
ISBN 13 : 3038972045
Total Pages : 220 pages
Book Rating : 4.0/5 (389 download)
Download or read book Mechanical Behavior of High-Strength Low-Alloy Steels written by Ricardo Branco and published by MDPI. This book was released on 2018-10-12 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Mechanical Behavior of High-Strength Low-Alloy Steels" that was published in Metals
Author : Toshihiro Hanamura
Publisher : Springer
ISBN 13 : 4431544992
Total Pages : 71 pages
Book Rating : 4.4/5 (315 download)
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.
Author : David Michael Kindel
Publisher :
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.:/5 (12 download)
Download or read book Effect of Microstructure on the Fracture Behaviour of High-strength Low-alloy Steels written by David Michael Kindel and published by . This book was released on 1984 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : P. Shanmugam
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (125 download)
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).
Author : N. E. Clark
Publisher :
ISBN 13 :
Total Pages : 460 pages
Book Rating : 4.:/5 (228 download)
Download or read book The Effect of Microstructure on the Fracture Toughness of a High Strength Steel written by N. E. Clark and published by . This book was released on 1976 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James Gregory Schroth
Publisher :
ISBN 13 :
Total Pages : 388 pages
Book Rating : 4.:/5 (136 download)
Download or read book Combined Mode I - Mode III Fracture Toughness of a High-strength Low-alloy Steel written by James Gregory Schroth and published by . This book was released on 1985 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 : 9789289431514
Total Pages : 207 pages
Book Rating : 4.4/5 (315 download)
Download or read book Fracture Toughness Predictions for Modern Low-carbon, High-strength Steels Based on Microstructural and Micromechanistic Approaches written by and published by . This book was released on 2002 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : P. L. Mangonon
Publisher :
ISBN 13 :
Total Pages : 408 pages
Book Rating : 4.:/5 (89 download)
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:
Author : C. S. Carter
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (189 download)
Download or read book Fracture toughness and stress corrosion characteristics of high strength maraging steel written by C. S. Carter and published by . This book was released on 1970 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of heat treatment on the tensile, fracture toughness, and stress corrosion properties of a high strength maraging steel (nominal composition 16.3 Ni-12.87 Co-4.98 Mo-0.78 Ti) is described. A maximum ultimate tensile strength of 323 ksi, combined with a fracture toughness of 62 ksi sq root of in. was achieved. This strength level appears to be the maximum which can be achieved in maraging type steels without decreasing the crack tolerance below that of currently used high strength low alloy steels. Reversion to austenite did not improve either the fracture toughness or stress corrosion resistance relative to completely martensitic microstructures with equivalent strength. (Author).
Author : W. Bleck
Publisher :
ISBN 13 : 9789279016851
Total Pages : 185 pages
Book Rating : 4.0/5 (168 download)
Download or read book Quantitative correlation of microstructure and fracture toughness for high strength steels and their welds (355-890 MPa) : contract no 7210-PR/312, 1 July 2001 to 30 June 2004 ; final report written by W. Bleck and published by . This book was released on 2006 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:
