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Author : Louis Raymond
Publisher : ASTM International
ISBN 13 : 0803109598
Total Pages : 429 pages
Book Rating : 4.8/5 (31 download)
Download or read book Hydrogen Embrittlement written by Louis Raymond and published by ASTM International. This book was released on 1988 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William J. Pollock
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (125 download)
Download or read book Assessment of the Degree of Hydrogen Embrittlement Produced in High-Strength 4340 Steel by Plating-and-Baking Processes Using Slow Strain Rate Testing written by William J. Pollock and published by . This book was released on 1988 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The degree of hydrogen embrittlement produced in high-strength 4340 steel by various cadmium, cadmium-titanium, and nickel plating-and-baking procedures is assessed from fracture stress values obtained during slow strain rate tests using notched tension specimens. At low crosshead displacement rates, the slow strain rate method is capable of quantifying the degree of embrittlement produced by a variety of low-embrittlement, plating-and-baking procedures and is more sensitive than conventional test methods defined in standard specifications. The advantages of using a slow strain rate method as a viable alternative to existing standard methods for assessment of the degree of hydrogen embrittlement in plated-and-baked, high-strength steel are discussed.
Author : Colin Grey
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (125 download)
Download or read book Assessment of the Degree of Hydrogen Embrittlement Produced in Plated High-Strength 4340 Steel by Paint Strippers Using Slow Strain Rate Testing written by Colin Grey and published by . This book was released on 1988 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present work demonstrates how a slow strain rate test can be used to quantify rapidly the severity of hydrogen embrittlement produced in porous cadmium plated-and-baked high-strength 4340 steel by paint strippers. The results of multiple slow strain rate tests, conducted at a crosshead displacement rate of 2 x 10-4 mm/s using notched tension specimens in various paint strippers, show that a minimum mean fracture stress within the range of 1700 to 1850 MN/m2 can be correlated with the pass/fail criterion for acceptability of paint strippers in standard notched C-ring tests. The advantages of using a slow strain rate test as a viable alternative to existing standard methods for hydrogen embrittlement testing are discussed.
Author : W. J. Pollock
Publisher :
ISBN 13 : 9780646007069
Total Pages : 16 pages
Book Rating : 4.0/5 (7 download)
Download or read book Statistical Treatment of Slow Strain Rate Data for Assessment of Hydrogen Embrittlement in Low Alloy High Strength Steel written by W. J. Pollock and published by . This book was released on 1990 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Slow strain rate testing has been used to quantify the degree of hydrogen embrittlement produced in high strength 4340 steel by plating processes and aircraft maintenance chemicals. The results of slow strain rate tests, conducted at a crosshead displacement rate of 2 x 0.0001 mm/s using samples of three notched tension specimens in various paint strippers, show that a mean fracture stress of 1850 MPa can be correlated with the pass/fail criterion for acceptability of paint strippers in an existing Standard Notched C-ring Test. Statistical analysis of the slow strain rate data allows criteria to be established which will ensure a 99% probability of identifying all paint strippers that fail the Notched C-ring Test. This analysis is also used to grade a series of products and processes in terms of their tendency to cause hydrogen embrittlement, and to identify environmental parameters that cause excessive scatter in hydrogen embrittlement tests. Criteria are also specified for acceptability of each heat treatment batch of 4340 steel specimens to ensure reproducibility of results obtained from slow strain rate tests. Keywords: Australia. (kr).
Author :
Publisher :
ISBN 13 :
Total Pages : 1440 pages
Book Rating : 4.E/5 ( download)
Download or read book Metals Abstracts written by and published by . This book was released on 1989 with total page 1440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 620 pages
Book Rating : 4.F/5 ( download)
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1988 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W. J. Pollock
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (22 download)
Download or read book Slow strain rate testing of high strength low-alloy steels written by W. J. Pollock and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. S. Anderssen
Publisher :
ISBN 13 :
Total Pages : 244 pages
Book Rating : 4.3/5 (91 download)
Download or read book Mini-conference on Free and Moving Boundary and Diffusion Problems (Canberra, June 14-16, 1990) written by R. S. Anderssen and published by . This book was released on 1992 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 1228 pages
Book Rating : 4.3/5 (91 download)
Download or read book Alloys Index written by and published by . This book was released on 1989 with total page 1228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. R. Elsea
Publisher :
ISBN 13 :
Total Pages : 166 pages
Book Rating : 4.3/5 (91 download)
Download or read book Hydrogen-induced, Delayed, Brittle Failures of High-strength Steels written by A. R. Elsea and published by . This book was released on 1964 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : BRW Hinton
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (125 download)
Download or read book Hydrogen Embrittlement of Plated High-Strength 4340 Steel by Galvanic Corrosion written by BRW Hinton and published by . This book was released on 1988 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Slow strain rate methods are used to quantify the degree of embrittlement in high-strength 4340 steel after coating with porous electroplated cadmium or ion-vapor-deposited aluminum and subsequently exposing to aqueous sodium chloride environments for various times. Porosity in the coatings is primarily responsible for the establishment of galvanic couples at the steel/coating interface, resulting in the generation and absorption of hydrogen in the steel. Data from hydrogen permeation and galvanic corrosion experiments are used to establish a model for hydrogen generation in coated tensile specimens. Estimates of the total hydrogen absorbed in cadmium-plated tensile specimens are consistent with the results of slow strain rate tests whereas similar calculations grossly underestimate the total hydrogen absorbed in aluminum-coated specimens where localized corrosion processes are believed to enhance the rate of hydrogen generation.
Author : Raymond L.
Publisher : ASTM International
ISBN 13 :
Total Pages : 274 pages
Book Rating : 4./5 ( download)
Download or read book Hydrogen Embrittlement Testing written by Raymond L. and published by ASTM International. This book was released on 1974 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. A. Berman
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (227 download)
Download or read book Indexing the Degree of Hydrogen Embrittlement of 4340 Steel Using the Barnacle Electrode written by D. A. Berman and published by . This book was released on 1976 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The barnacle electrode, an electrochemical device based on the hydrogen permeation method, was used, in conjunction with sustained load tests, to index the degree of embrittlement of 4340 steel. Flat, double notched tensile specimens of 250 ksi (1725 MPa) notched tensile strength and having a K sub T of 5.6 were shown to have a critical diffusible hydrogen concentration of 1.9, 1.7, 1.4, 1.2, 0.9 and 0.5 ppm for loads of 15, 20, 25, 30, 35 and 40 percent of the notched tensile strength. (Author).
Author : J. Krieg
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (137 download)
Download or read book Investigation of Hydrogen Embrittlement of Hard High Chromium Alloy Plated 4340 Steel written by J. Krieg and published by . This book was released on 1963 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : K. N. Tong
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (227 download)
Download or read book An Investigation of Hydrogen Embrittlement of 4340 Steel Under Stress written by K. N. Tong and published by . This book was released on 1957 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : C. S. KORTOVICH
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (227 download)
Download or read book Inhibition of Hydrogen Embrittlement in High Strength Steel written by C. S. KORTOVICH and published by . This book was released on 1975 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report involved a study of the effect of rare earth additions on the hydrogen embrittlement resistance of 4340 steel. Attempts were made in this study to improve the hydrogen embrittlement and stress corrosion resistance of hydrogenated 4340.
Author : Metals Technical Committee
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (138 download)
Download or read book Hydrogen Embrittlement Testing of Ultra High Strength Steels and Stampings by Acid Immersion written by Metals Technical Committee and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This standard describes a test method for evaluating the susceptibility of uncoated cold rolled and hot rolled Ultra High Strength Steels (UHSS) to hydrogen embrittlement. The thickness range of materials that can be evaluated is limited by the ability to bend and strain the material to the specified stress level in this specification.Hydrogen embrittlement can occur with any steel with a tensile strength greater than or equal to 980 MPa. Some steel microstructures, especially those with retained austenite, may be susceptible at lower tensile strengths under certain conditions. The presence of available hydrogen, combined with high stress levels in a part manufactured from high strength steel, are necessary precursors for hydrogen embrittlement.Due to the specific conditions that need to be present for hydrogen embrittlement to occur, cracking in this test does not indicate that parts made from that material would crack in an automotive environment. Results from this test should be considered in conjunction with the strain state of the material and the operating environment of the part when selecting any UHSS. Since this test method is comparative, the most information can be gained if a control sample of known performance is evaluated along with the material being studied. Aggressive mass reduction targets for ground vehicles have led to the development of a new generation of high strength steels. Very high tensile strength as well as the presence of retained austenite as a major microstructural constituent make these steels susceptible to hydrogen embrittlement.
