Download or read book A Stress Corrosion Cracking Test with Slow Strain Rate and Constant Current written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stress Corrosion Cracking written by G. M. Ugiansky and published by ASTM International. This book was released on 1979 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stress Corrosion Cracking Test with Slow Strain Rate and Constant Current written by RS. Ondrejcin and published by . This book was released on 1979 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: A rapid electrochemical tension test was developed for evaluating stress corrosion crack initiation in carbon steel. Constant anodic current was imposed on smooth-bar tension specimens as the specimens were slowly strained to fracture at 1.3 x 10-6/s. Equivalent results were obtained for the following ductility properties measured: uniform elongation, total elongation, and reduction of area. Total elongation was chosen as the index for stress corrosion crack initiation. An equation was developed that allowed calculation of total elongation of specimens in electrolytes (test solutions) with composition ranges of 1.5 to 5.5 M nitrate, 0 to 3.5 M nitrite, and 0 to 5.0 M hydroxide, and a temperature range of 50 to 100°C. A minimum of 13 percent total elongation was selected to indicate the possible initiation of cracking in A 285-B steel alloy.
Download or read book Stress Corrosion Cracking the Slow Strain rate Technique written by G. M. Ugiansky and published by ASTM International. This book was released on 1979 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Slow Strain Rate Testing for the Evaluation of Environmentally Induced Cracking written by R. D. Kane and published by ASTM International. This book was released on 1993 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to predict when and how a material will crack under environmental conditions, engineers used to subject it to pressure for a long time, up to a year in cases; about 20 years ago, a testing method was developed that slowly but inexorably increases the pressure, which seems to cut down the ti
Download or read book Stress Corrosion Cracking the Slow Strain rate Technique written by G. M. Ugiansky and published by . This book was released on 1979 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Review of the Constant Strain Rate Stress Corrosion Cracking Test written by CD. Kim and published by . This book was released on 1979 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review of six years operational experience in using the slow strain test procedure has indicated several unique advantages associated with dynamic strain techniques and also identified an area of limitation.
Download or read book Limitations of the Slow Strain Rate Test for Stress Corrosion Cracking Testing written by John A. Beavers and published by . This book was released on 1995 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparative Findings Using the Slow Strain Rate Constant Flow Stress and U Bend Stress Corrosion Cracking Techniques written by WJ. Daniels and published by . This book was released on 1979 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The testing of materials for stress corrosion cracking (SCC) in a use environment involves the risk that cracking may not be found by the test technique. When this happens, immunity to SCC may be incorrectly concluded. To avoid this type of error, the use of multiple testing techniques is recommended.
Download or read book ASTM Special Technical Publication written by and published by . This book was released on 1979 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Comparisons of the Slow Strain Rate Method with the Constant Strain and the Constant Load Methods of Stress Corrosion Testing written by JF. Andrew and published by . This book was released on 1979 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two practical stress corrosion investigations are outlined in which the results of slow strain-rate tests are compared with the results of other test methods.
Download or read book Current Engineering Practice written by and published by . This book was released on 1981 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Potential and Strain Rate Effects in Slow Strain Rate Stress Corrosion Cracking of Type 304 Stainless Steel in 35 Percent Magnesium Chloride at 120 C written by KJ. Kessler and published by . This book was released on 1981 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Constant extension rate experiments have been performed on Type 304 stainless steel round tension-test specimens in 35 percent magnesium chloride at 120°C as a function of electrode potential and extension rate. When potentiostatic measurement was applied, an extension rate of 4.4 x 10-6 s-1 was found to be acceptable as an accelerated test. These tests are compared with constant load measurements by variation of the electrode potential. Both methods indicate that stress-corrosion cracking decreases by lowering electrode potential and disappears below -380 mV (saturated calomel electrode). Current density-time plots made during constant straining and fractographic observations show different types of crack formation. The number of cracks increases with increasing potential, and the crack depth decreases with accelerated straining. Transgranular stress-corrosion cracking is observed accompanied by pitting. The selective corrosion in the early stage of cracking was revealed by scanning electron microscope (SEM) micrographs and SEM analysis. Iron and nickel are dissolved and a chromiumrich phase is formed along the crack walls. Although the first attack appears to be intercrystalline, the fracture shows only transgranular features.
Download or read book The Constant Strain Rate Methode written by H. F. de Jong and published by . This book was released on 1976 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Slow Strain Rate Technique written by GJ. Theus and published by . This book was released on 1979 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes slow strain-rate test equipment, operable at elevated temperatures and pressures, that includes electrochemical potential control capability. Applications in caustic stress corrosion cracking (SCC) studies of both nuclear steam generator and fossil boiler materials are presented. Electrochemical potential regions for stress corrosion cracking of Inconel alloy 600, Incoloy alloy 800, and Type 304 stainless steel are compared to results obtained using constant load specimens. Tests with titanium stabilized Alloy 800 (Sanicro 30) tubular specimens also demonstrate the effect of potential on cracking mode. A comparison of SCC test results, using both long term exposure tests and short term straining electrode tests, is made between a mild steel and its weld metal. In these examples, favorable comparisons are obtained with tests using conventional methods, proving the value and usefulness of the slow straining device in accelerating SCC studies and in defining more accurately conditions under which SCC can occur.
Download or read book Development of Strain Rate Testing and Its Implications written by RN. Parkins and published by . This book was released on 1979 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of slow dynamic straining to specimens to facilitate stress corrosion cracking (SCC) now has been in use for more than a decade, and the test is beginning to emerge as one that has much more relevance than the rapid sorting test to which its early use was related. The importance of creep effects in constant load testing is considered, and it is shown that reasonable predictions of threshold stresses for SCC can be made from relevant creep data and that the effects of prior creep upon the incidence of cracking and of the phenomenon of nonpropagating cracks below the threshold stress are all in agreement with the concept of the crack tip strain rate playing a major role, even under constant load conditions. The reasonable correlation between appropriate strain rate and constant load tests is therefore not surprising, nor is the reduction in threshold stress by dynamic straining, with or without cyclic loading, over that observed for constant loads.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-04 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
