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The Quasi-static, Cyclic Fatigue and Final Fracture Behavior of High Strength Stainless Steel

The Quasi-static, Cyclic Fatigue and Final Fracture Behavior of High Strength Stainless Steel
Author: Dheeraj Kondisetti
Publisher:
Total Pages: 130
Release: 2016
Genre: Stainless steel
ISBN:

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The history of steel dates back to the 17th century. Steel has been instrumental in the betterment of every aspect of our lives ever since, from the pin that holds the paper together to the reinforcement in the construction industry. Path breaking improvements in manufacturing techniques, access to advanced machinery and understanding of factors like heat treatment and corrosion resistance have aided in the advancement of the properties of steel in the last few years. In this thesis, the results of a study aimed at determining the influence of temperature and influence of the quasi static and fatigue behavior of stainless steel 2304 are discussed. The microstructure of the as-received steel was examined as a reference and characterized for the nature and morphology of the grains and the presence of other intrinsic features in the microstructure. The tensile, cyclic fatigue and bending fatigue tests were done on a fully automated closed-loop servo-hydraulic test machine at room temperature. The failed samples of this high strength steel were examined in a scanning electron microscope for understanding the fracture behavior, especially the nature of loading such as quasi static , cyclic fatigue or bending fatigue . The quasi static and cyclic fatigue fracture behavior of the steels examined coupled with various factors contributing to failure are briefly discussed in light of the conjoint and mutually interactive influences of intrinsic microstructural effects, nature of loading, and stress (load)-deformation-microstructural interactions.


Quasi-Static, Cyclic Fatigue and Fracture Behavior of Alloy Steel for Structural Applications

Quasi-Static, Cyclic Fatigue and Fracture Behavior of Alloy Steel for Structural Applications
Author: S. Gowda
Publisher:
Total Pages: 16
Release: 2016
Genre: Alloy steel
ISBN:

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In this paper, the results of a study aimed at understanding the extrinsic influence of test specimen orientation, with respect to a wrought alloy-steel plate, on the stress-controlled cyclic fatigue properties and fracture behavior of a structural steel is highlighted. The alloy steel chosen was ASTM A572 grade 50. Samples of this alloy steel, prepared from both the longitudinal and transverse orientations, were cyclically deformed over a range of maximum stress and the corresponding number of cycles to failure (NF) was recorded. The influence of test specimen orientation and intrinsic microstructural effects on cyclic fatigue life and fracture behavior are presented and discussed. Overall, the macroscopic fracture mode was essentially identical regardless of orientation of the test specimen with respect to the wrought plate. The microscopic mechanisms governing cyclic deformation, fatigue life, and final fracture behavior are presented in light of the mutually interactive influences of magnitude of applied stress, intrinsic microstructural effects, orientation of test specimen, and deformation characteristics of the key microstructural constituents.


The Microstructure, Hardness, Impact Toughness, Tensile Deformation and Final Fracture Behavior of Four Specialty High Strength Steels

The Microstructure, Hardness, Impact Toughness, Tensile Deformation and Final Fracture Behavior of Four Specialty High Strength Steels
Author: Manigandan Kannan
Publisher:
Total Pages: 111
Release: 2011
Genre: Fracture mechanics
ISBN:

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The history of steel dates back to the 17th century and has been instrumental in the betterment of every aspect of our lives ever since, from the pin that holds the paper together to the automobile that takes us to our destination steel touch everyone every day. Pathbreaking improvements in manufacturing techniques, access to advanced machinery and understanding of factors like heat treatment and corrosion resistance have aided in the advancement in the properties of steel in the last few years. This thesis report will attempt to elaborate upon the specific influence of composition, microstructure, and secondary processing techniques on both the static (uni-axial tensile) and dynamic (impact) properties of the four high strength steels AerMet®100, PremoMet(TM)290, 300M and Tenax(TM) 310. The steels were manufactured and marketed for commercial use by CARPENTER TECHNOLOGY, Inc (Reading, PA, USA). The specific heat treatment given to the candidate steels determines its microstructure and resultant mechanical properties spanning both static and dynamic. Test specimens of the steels were precision machined and conformed to standards specified and prescribed by the American Society for Testing Materials (ASTM) for both tensile tests and Charpy V-Notch impact tests. Based on similarity of the secondary processing technique the candidate specialty steels were divided into two groups: (i) AerMet®100 and PremoMet(TM)290, (ii) 300M and Tenax(TM)310. The impact toughness response and resultant fracture behavior of the steels were studied at different temperatures ranging from -180°C to +170°C. Tensile tests were performed at room temperature and the final fracture behavior of the candidate steel was established at both the macroscopic and fine microscopic levels. The intrinsic microscopic mechanisms governing the impact toughness, quasi static deformation and final fracture behavior of each of the chosen high strength steels will be elaborated upon in light of the conjoint and mutually interactive influences of composition, intrinsic microstructural effects, and nature of loading.


The Cyclic Strain Resistance, Stress Response, Fatigue Life, and Fracture Behavior of a High Performance Alloy Steel

The Cyclic Strain Resistance, Stress Response, Fatigue Life, and Fracture Behavior of a High Performance Alloy Steel
Author: K. Manigandan
Publisher:
Total Pages: 21
Release: 2014
Genre: Alloy steel
ISBN:

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In this paper, the results of a recent study aimed at understanding the role of microstructure on cyclic stress response, cyclic strain resistance, deformation, fatigue life, and fracture behavior of the high strength alloy steel PremoMet 290 is presented and discussed. The cyclic strain amplitude-controlled fatigue properties, deformation, and resultant fracture behavior of the alloy steel specimens are discussed when cyclically deformed over a range of strain amplitudes. The intrinsic mechanisms governing stress response, stress versus strain response fatigue life, deformation, and final fracture behavior are presented and discussed in light of the competing and mutually interactive influences of intrinsic microstructural effects, deformation characteristics of the microstructural constituents, cyclic strain amplitude, and concomitant response stress.


Comprehensive Materials Finishing

Comprehensive Materials Finishing
Author: M.S.J. Hashmi
Publisher: Elsevier
Total Pages: 1467
Release: 2016-08-29
Genre: Technology & Engineering
ISBN: 0128032502

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Finish Manufacturing Processes are those final stage processing techniques which are deployed to bring a product to readiness for marketing and putting in service. Over recent decades a number of finish manufacturing processes have been newly developed by researchers and technologists. Many of these developments have been reported and illustrated in existing literature in a piecemeal manner or in relation only to specific applications. For the first time, Comprehensive Materials Finishing, Three Volume Set integrates a wide body of this knowledge and understanding into a single, comprehensive work. Containing a mixture of review articles, case studies and research findings resulting from R & D activities in industrial and academic domains, this reference work focuses on how some finish manufacturing processes are advantageous for a broad range of technologies. These include applicability, energy and technological costs as well as practicability of implementation. The work covers a wide range of materials such as ferrous, non-ferrous and polymeric materials. There are three main distinct types of finishing processes: Surface Treatment by which the properties of the material are modified without generally changing the physical dimensions of the surface; Finish Machining Processes by which a small layer of material is removed from the surface by various machining processes to render improved surface characteristics; and Surface Coating Processes by which the surface properties are improved by adding fine layer(s) of materials with superior surface characteristics. Each of these primary finishing processes is presented in its own volume for ease of use, making Comprehensive Materials Finishing an essential reference source for researchers and professionals at all career stages in academia and industry. Provides an interdisciplinary focus, allowing readers to become familiar with the broad range of uses for materials finishing Brings together all known research in materials finishing in a single reference for the first time Includes case studies that illustrate theory and show how it is applied in practice


Energy Research Abstracts

Energy Research Abstracts
Author:
Publisher:
Total Pages: 886
Release: 1992
Genre: Power resources
ISBN:

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Applied mechanics reviews

Applied mechanics reviews
Author:
Publisher:
Total Pages: 400
Release: 1948
Genre: Mechanics, Applied
ISBN:

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Brazing and Soldering 2012

Brazing and Soldering 2012
Author: Robbin Gourley
Publisher: ASM International
Total Pages: 533
Release: 2012-01-01
Genre: Technology & Engineering
ISBN: 1615039937

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Fracture, Fatigue, Failure and Damage Evolution, Volume 7

Fracture, Fatigue, Failure and Damage Evolution, Volume 7
Author: Jay Carroll
Publisher: Springer
Total Pages: 123
Release: 2017-08-24
Genre: Science
ISBN: 3319628313

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Fracture, Fatigue, Failure and Damage Evolution, Volume 7 of the Proceedings of the 2017 SEM Annual Conference & Exposition on Experimental and Applied Mechanics, the seventh volume of nine from the Conference, brings together contributions to this important area of research and engineering. Session organizers include: Jay Carroll, Shuman Xia, Allison Beese, Ryan Berke, Garrett Pataky, Samantha Daly, Kavan Hazeli, Antonios Kontsos, Omer Ozgur Capraz, Scott Grutzik, Onome Scott-Emaukpor The collection presents early findings and case studies on a wide range of areas, including: Mechanics of Energy & Energetic Materials Vibration Effects in Fracture & Fatigue Fracture & Fatigue of Additively Manufactured Materials In Situ Techniques for Fatigue & Fracture Microscale & Microstructural Effects on Mechanical Behavior Fracture & Fatigue of Composites Integration & Validation of Models with Experiments Fracture & Fatigue in Extreme Environments Novel Experimental Methods for Fatigue and Fracture Fracture of Brittle & Ductile Materials Interfacial Fracture