P029 Hydrogen Degradation Susceptibility by Slow Strain Rate Technique and Constant Load Test of Cold-Drawn High-Strength Stainless Steel Wire

2007 ◽  
Vol 2007 (0) ◽  
pp. 653-654
Author(s):  
Toshikazu Horiguchi ◽  
Hiroshi SUZUKI ◽  
Yukito HAGIHARA ◽  
Hiroshi IZUMIDA ◽  
Nozomu KAWABE
Keyword(s):  
Stainless Steel ◽  
Strain Rate ◽  
Steel Wire ◽  
High Strength ◽  
Constant Load ◽  
Slow Strain Rate ◽  
Load Test ◽  
Stainless Steel Wire ◽  
Hydrogen Degradation ◽  
Slow Strain Rate Technique

scholarly journals Cathodic and Anodic Stress Corrosion Cracking of a New High-Strength CrNiMnMoN Austenitic Stainless Steel

Metals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1541
Author(s):  
Mathias Truschner ◽  
Jacqueline Deutsch ◽  
Gregor Mori ◽  
Andreas Keplinger
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Strain Rate ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
High Strength ◽  
Constant Load ◽  
Corrosion Cracking ◽  
Slow Strain Rate ◽  
Induced Stress

A new high-nitrogen austenitic stainless steel with excellent mechanical properties was tested for its resistance to stress corrosion cracking. The new conventional produced hybrid CrNiMnMoN stainless steel combines the excellent mechanical properties of CrMnN stainless steels with the good corrosion properties of CrNiMo stainless steels. Possible applications of such a high-strength material are wires in maritime environments. In principle, the material can come into direct contact with high chloride solutions as well as low pH containing media. The resistance against chloride-induced stress corrosion cracking was determined by slow strain rate tests and constant load tests in different chloride-containing solutions at elevated temperatures. Resistance to hydrogen-induced stress corrosion cracking was investigated by precharging and ongoing in-situ hydrogen charging in both slow strain rate test and constant load test. The hydrogen charging was carried out by cathodic charging in 3.5 wt.% NaCl solution with addition of 1 g/L thiourea as corrosion inhibitor and recombination inhibitor to ensure hydrogen absorption with negligible corrosive attack. Slow strain rate tests only lead to hydrogen induced stress corrosion cracking by in-situ charging, which leads to total hydrogen contents of more than 10 wt.-ppm and not by precharging alone. Excellent resistance to chloride-induced stress corrosion cracking in 43 wt.% CaCl2 at 120 °C and in 5 wt.% NaCl buffered pH 3.5 solution at 80 °C is obtained for the investigated austenitic stainless steel.

Stress Corrosion Behavior of AISI 304 Stainless Steel in a Boiling 42% MgCl2 Solution under Cyclic Slow Strain Rate Technique

CORROSION ◽  
1985 ◽  
Vol 41 (10) ◽  
pp. 592-597 ◽  
Author(s):  
T. Nakayama ◽  
M. Takano
Keyword(s):  
Stainless Steel ◽  
Strain Rate ◽  
Stress Corrosion ◽  
Slow Strain Rate ◽  
304 Stainless Steel ◽  
Slow Strain Rate Test ◽  
Aisi 304 Stainless Steel ◽  
Aisi 304 ◽  
Rate Test ◽  
Slow Strain Rate Technique

Abstract Stress corrosion cracking (SCC) behavior of AISI 304 stainless steel (SS) rod and plate specimens in boiling 42% MgCl2 was investigated using a monotonic and a cyclic slow strain rate technique (SSRT) in the crosshead speed (CHS) range from 6×10−5 to 1.5 mm/min. A maximum stress (σmax) of 50 to 330 MPa was selected in a cyclic slow strain rate test. A thermal cyclic stress test was also conducted in the solution. Fracture surface observations revealed that crack mode changed from transgranular to intergranular with increasing stress level in the SCC process, and the crack mode was independent of the CHS change. Time to failure in the cyclic slow strain rate test was constant at a given σmax in all CHS used (except slow CHS of 6×10−5 at σmax of 50 MPa). Crack propagation rate (da/dt) increased with the stress intensity factor, and it was independent of CHS. The corrosion potential varied with the stress cycle after cracking started; this indicated that SCC proceeded by a dissolution-repassivation mechanism. The cyclic slow strain rate test is recommended as an SCC test that can reproduce the actual service conditions of stress.

scholarly journals Tensile Behavior of High-Strength Stainless Steel Wire Rope (HSSSWR)-Reinforced ECC

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Xinling Wang ◽  
Guanghua Yang ◽  
Wenwen Qian ◽  
Ke Li ◽  
Juntao Zhu
Keyword(s):  
Tensile Strength ◽  
Stainless Steel ◽  
Crack Width ◽  
Steel Wire ◽  
High Strength ◽  
Wire Rope ◽  
Stainless Steel Wire ◽  
Deformation Capacity ◽  
Test Results ◽  
Cracking Resistance

AbstractEngineered cementitious composites (ECC) show the distinguished characteristics of high post-cracking resistance and ductility. High-strength stainless steel wire rope (HSSSWR) has been successfully used for restoring or strengthening of existing structures. By combining the advantages of these two materials, a new composite system formed by embedding HSSSWR into ECC was proposed and expected to be a promising engineering material for repair or strengthening of structures. To investigate the tensile failure mechanism and mechanical properties of HSSSWR-reinforced ECC, an experimental study on 27 HSSSWR-reinforced ECC plates was conducted considering the effects of the reinforcement ratio of longitudinal HSSSWRs, formula of ECC and width of the plate. Test results revealed that HSSSWR-reinforced ECC exhibit superior post-cracking resistance, deformation capacity and crack-width control capacity. Increasing the reinforcement ratio of longitudinal HSSSWRs can effectively enhance the tensile strength, crack-width control capacity, deformation capacity and tensile toughness of HSSSWR-reinforced ECC. Adding thickener in ECC can significantly improve the crack-width control capacity and deformation capacity of HSSSWR-reinforced ECC due to enhancing uniform distribution of polyvinyl alcohol fibers, but would slightly reduce the cracking stress and maximum tensile stress by bringing small bubbles in the matrix. The tensile properties of HSSSWR-reinforced ECC plates are almost not affected by varying the plate width. Besides, a tensile constitutive model was developed for charactering the stress–strain relationship of HSSSWR-reinforced ECC in tension. Based on mechanical theories and failure characteristics of HSSSWR-reinforced ECC, the model parameters were determined, and calculation equations of cracking stress and tensile strength were proposed. The accuracy of the developed model and calculation equations was verified by test results.

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