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Factors Influencing The Microstructure And Mechanical Properties Of Ultra Low Carbon Bainitic 100 Tungsten Inert Gas Multipass Weldments
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Book Synopsis Factors Influencing the Microstructure and Mechanical Properties of Ultra Low Carbon Bainitic 100 Tungsten Inert Gas Multipass Weldments by : Eugene Paul McDonald
Download or read book Factors Influencing the Microstructure and Mechanical Properties of Ultra Low Carbon Bainitic 100 Tungsten Inert Gas Multipass Weldments written by Eugene Paul McDonald and published by . This book was released on 1992 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1993 with total page 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts written by and published by . This book was released on 1994-03-07 with total page 1668 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Quantitative Microstructural Characterization of Multipass TIG Ultra Low Carbon Bainitic Steel Weldments and Correlation with Mechanical Properties by : Daniel E. Butler
Download or read book The Quantitative Microstructural Characterization of Multipass TIG Ultra Low Carbon Bainitic Steel Weldments and Correlation with Mechanical Properties written by Daniel E. Butler and published by . This book was released on 1993 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Navy has maintained a continuous research, development and certification program in ULCB steels as a possible replacement for the HY and HSLA steels currently being used in ship construction. The overall aim of this program is to develop a high strength steel with improved weldability. Improved weldability could eliminate the requirement of preheating, (a necessary and costly step required to prevent weld metal cracking in HY steels). The strength of ULCB steel weldments can be correlated to the weld metals composition in a simple manner, however the toughness of the weldment seems to fluctuate in complex manner depending on the weld metal composition, weld power, and possibly the non-metallic inclusion size, type, number and distribution. This study attempted to correlate the embrittlement of ULCB/ULCB multipass TIG weldments to the given microstructure and to the type, size, number and distribution of the nonmetallic inclusions within the weldment. This work led to the following conclusions; (A) The embrittlement of ULCB weldments appeared to be the result of microscopic transgranular cracking, (B) There exists a need to design a process which can manufacture reproducible multipass weldments to facilitate testing, and (C) the type, size, number and distribution of the nonmetallic inclusions did not appear to be a factor in the toughness of the weldments investigated.
Book Synopsis The Quantitative Microstructural Characterization of Multipass TIG Ultra Low Carbon Bainitic Steel Weldments and Correlation with Mechanical Properties by : Daniel E. Butler
Download or read book The Quantitative Microstructural Characterization of Multipass TIG Ultra Low Carbon Bainitic Steel Weldments and Correlation with Mechanical Properties written by Daniel E. Butler and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Navy has maintained a continuous research, development and certification program in ULCB steels as a possible replacement for the HY and HSLA steels currently being used in ship construction. The overall aim of this program is to develop a high strength steel with improved weldability. Improved weldability could eliminate the requirement of preheating, (a necessary and costly step required to prevent weld metal cracking in HY steels). The strength of ULCB steel weldments can be correlated to the weld metals composition in a simple manner, however the toughness of the weldment seems to fluctuate in complex manner depending on the weld metal composition, weld power, and possibly the non-metallic inclusion size, type, number and distribution. This study attempted to correlate the embrittlement of ULCB/ULCB multipass TIG weldments to the given microstructure and to the type, size, number and distribution of the nonmetallic inclusions within the weldment. This work led to the following conclusions; (A) The embrittlement of ULCB weldments appeared to be the result of microscopic transgranular cracking, (B) There exists a need to design a process which can manufacture reproducible multipass weldments to facilitate testing, and (C) the type, size, number and distribution of the nonmetallic inclusions did not appear to be a factor in the toughness of the weldments investigated.
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 1994 with total page 1442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Book Synopsis Mechanical and Microstructural Properties of Ultra-Low Carbon Bainitic Steel Weld Metal by :
Download or read book Mechanical and Microstructural Properties of Ultra-Low Carbon Bainitic Steel Weld Metal written by and published by . This book was released on 1995 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of its reduced susceptibility to cracking, Ultra-Low Carbon Bainitic (ULCB) steel weld wire is being investigated as a consumable for Gas Tungsten Arc (GTA) and Gas Metal Arc (GMA) welding of Navy high strength (100 ksi) steels. In the present work, a candidate ULCB weld wire was investigated for GTA and GMA welding processes as a function of both welding power and cover gas. The strength and Charpy V-notch toughness of the resulting welds was investigated. It was found that the GTA weld using 100% argon cover gas had excellent toughness (well above Navy requirements), but the strength was at the minimum specification. The GMA welds using a cover gas of 95% argon - 5% CO2 (C5) showed the opposite trend in that they were well within the range of strength specifications, but their toughness was unsatisfactory. Chemical, mechanical and microstructural studies of these welds were performed. GMA welds using C5 cover gas had a higher weld metal.
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 1993-03 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Factors Affecting the Strength and Toughness of Ultra-Low Carbon Steel Weld Metal by :
Download or read book Factors Affecting the Strength and Toughness of Ultra-Low Carbon Steel Weld Metal written by and published by . This book was released on 1999 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: The factors that affect strength and toughness often ultra-low carbon steel weld samples (HSLA-80 and HSLA-100), welded using the gas metal arc welding (GMAW) process and new ultra-low carbon consumable electrodes, were studied. The analysis was confined only to the weld metal, and the base metal was not considered. Analysis methods included optical microscopy, scanning electron microscopy, and transmission electron microscopy. Energy dispersive x-ray analysis was performed in the transmission electron microscope to analyze the chemical composition of non-metallic inclusions. The microstructure was found to be primarily granular ferrite with some primary ferrite, bainite, and martensite. Very little acicular ferrite was found (
Book Synopsis The Effects of Alloying Elements on the Strength and Cooling Rate Sensitivity of Ultra-Low Carbon Alloy Steel Weld Metals by :
Download or read book The Effects of Alloying Elements on the Strength and Cooling Rate Sensitivity of Ultra-Low Carbon Alloy Steel Weld Metals written by and published by . This book was released on 1994 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was conducted to evaluate the effect of weld cooling rate on the strength of autogenous GTAW deposited weld metal. The basic weld metal composition was based on a low carbon bainite metallurgical system. The weld metal yield strength goal was 130 ksi, needed to surpass the current HY-13O weld metal requirements. Vacuum Induction Melted (VIM) heats of steel were produced and processed into 3/4' thickness plates. The autogenous gas tungsten are welds (GTAW) on the parent steel plates were produced under two different heat input conditions. Tensile specimens were produced from the weldments; specimens from certain heats were subjected to gleeble thermal simulations of multi-pass welding conditions using the Gleeble 1500. All specimens were then evaluated for yield and ultimate tensile strength. From the data presented, it was found that the experimental compositions studied were less sensitive to cooling rate than current HY-130 welding consumables. The compositions tested approached the target yield strength of 130 ksi, but further work is necessary in this area.
Download or read book Metals Abstracts written by and published by . This book was released on 1996 with total page 1650 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of Factors Affecting Strength Properties of 2219-T87 Aluminum Alloy Weldments Joined by the Tungsten Electrode Inert Gas Welding Process by : Franklin Jerome Jackson
Download or read book Determination of Factors Affecting Strength Properties of 2219-T87 Aluminum Alloy Weldments Joined by the Tungsten Electrode Inert Gas Welding Process written by Franklin Jerome Jackson and published by . This book was released on 1965 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Factors Affecting the Impact Toughness of Ultra Low Carbon Steel Weld Metal by : Mary Elizabeth Gwin
Download or read book Factors Affecting the Impact Toughness of Ultra Low Carbon Steel Weld Metal written by Mary Elizabeth Gwin and published by . This book was released on 1996-09-01 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fundamental factors affecting the impact toughness of four gas metal arc welds (GMAW) made on HSLA-100 base plate using a newly developed steel weld wire were studied. The weld metal analysis included chemistry, mechanical testing (hardness, CVN/FATT), as well as optical, scanning and transmission electron microscopy. Studies of inclusion composition using energy dispersive x- ray (EDX), and electron energy loss spectroscopy (EELS) in the transmission electron microscope were also performed. It was found that increasing oxygen content of the weld metal (due to increased oxygen in the shielding gas) led to increased non-metallic inclusion size and volume fraction; which in turn, led to both decreasing strength and toughness. The strength was lowered because increasing oxygen in the shielding gas led to increased 'consumption' of strengthening alloys such as carbon, manganese and silicon. The toughness was compromised by the increasing size and number of oxide inclusions as these provide sites for void formation and subsequent fracture.
Book Synopsis Factors Influencing the Microstructural and Mechanical Properties of ULCB Steel Weldments by : Paul F. McHale
Download or read book Factors Influencing the Microstructural and Mechanical Properties of ULCB Steel Weldments written by Paul F. McHale and published by . This book was released on 1991 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Some Fatigue Properties of Tungsten Inert Gas Butt Welds in Low Carbon 1/2% Molybdenum-boron Steel Sheet by : Frank Morrow
Download or read book Some Fatigue Properties of Tungsten Inert Gas Butt Welds in Low Carbon 1/2% Molybdenum-boron Steel Sheet written by Frank Morrow and published by . This book was released on 1966 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Introduction to the Physical Metallurgy of Welding by : Kenneth Easterling
Download or read book Introduction to the Physical Metallurgy of Welding written by Kenneth Easterling and published by Elsevier. This book was released on 2013-09-17 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to the Physical Metallurgy of Welding deals primarily with the welding of steels, which reflects the larger volume of literature on this material; however, many of the principles discussed can also be applied to other alloys. The book is divided into four chapters, in which the middle two deal with the microstructure and properties of the welded joint, such as the weld metal and the heat-affected zone. The first chapter is designed to provide a wider introduction to the many process variables of fusion welding, particularly those that may influence microstructure and properties, while the final chapter is concerned with cracking and fracture in welds. A comprehensive case study of the Alexander Kielland North Sea accommodation platform disaster is also discussed at the end. The text is written for undergraduate or postgraduate courses in departments of metallurgy, materials science, or engineering materials. The book will also serve as a useful revision text for engineers concerned with welding problems in industry.
Book Synopsis Bainite in Steels by : H.K.D.H. Bhadeshia
Download or read book Bainite in Steels written by H.K.D.H. Bhadeshia and published by CRC Press. This book was released on 2019-04-15 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the third edition of the book, much expanded to include and incorporate important developments in the subject over the last fifteen years. The book represents a comprehensive treatise on all aspects of the bainite transformation, from the choreography of atoms during the phase change to length scales that are typical of engineering applications. The alloy design that emerges from this explains the role of solute additions, and the pernicious effects of impurities such as hydrogen. The picture presented is self-consistent and therefore is able to guide the reader on the exploitation of theory to the design of some of the most exciting steels, including the world’s first bulk nanostructured metal.
