scholarly journals Peculiarities of stress corrosion fracture of sensitized and neutron irradiated chromium-nickel austenitic steel

2022 ◽  
Vol 2155 (1) ◽  
pp. 012011
Author(s):  
A V Yarovchuk ◽  
A S Dikov ◽  
K V Tsay
Keyword(s):  
Stress Corrosion ◽  
Austenitic Steel ◽  
Structural Features ◽  
Intergranular Cracking ◽  
Reinforcing Effect ◽  
Corrosion Fracture ◽  
Fracture Surfaces ◽  
Corrosive Solution ◽  
Sem Studies

Abstract The results of SEM studies of fracture surfaces for the 12Cr18Ni9 austenitic steel ruptured under a fixedtensile load in FeCl3 water solutionand in air are presented. The samples of austenized, sensitized at 650° and irradiated with neutrons (to 1020n/cm2) steel were examined. It was shown thatirradiation hardening and sensitizing annealing increased the susceptibility of steel to intergranular cracking in corrosive solution. Structural features of formation of the strain-induced α’-martensite and its reinforcing effect on fracture in various environments are discussed.

scholarly journals Corrosion of High-Strength Steel Wires under Tensile Stress

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4790
Author(s):  
Shanglin Lv ◽  
Kefei Li ◽  
Jie Chen ◽  
Xiaobin Li
Keyword(s):  
Tensile Stress ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Immersion Time ◽  
High Strength ◽  
Corrosion Cracking ◽  
Corrosion Products ◽  
Corrosive Solution ◽  
Steel Wires ◽  
The Impact

The stress corrosion cracking is the central issue for high-strength wires under high tensile stress used in civil engineering. This paper explores the resistance of stress corrosion cracking of three typical steel wires of high-strength carbon through a laboratory test, combining the actions of tensile stress and corrosive solution. Besides, the impact of tensile stress and immersion time are also investigated. During the tests, the wires were subject to electrochemical measurements of potentiodynamic polarization and electrochemical impedance spectroscopy, and the microstructure analysis was performed on the fractured cross sections. The obtained results show the following: the high-strength wire, conforming to GB/T 5224, has higher resistance to the combined actions of tensile stress and corrosive solution; tensile stress of 70% fracture strength and longer loading-immersion time make the film of corrosion products on steel surface unstable and weaken the corrosion resistance; the surface film consisted of the iron oxide film and the corrosion products film whose components are mainly iron thiocyanate and iron sulphide.

X-Ray Residual Stress Measurement on Stress Corrosion Fracture Surfaces

1992 ◽  
Vol 36 ◽  
pp. 543-549
Author(s):  
Masaaki Tsuda ◽  
Yukio Hirose ◽  
Zenjiro Yajima ◽  
Keisuke Tanaka
Keyword(s):  
Fracture Toughness ◽  
Residual Stress ◽  
Fracture Surface ◽  
Stress Corrosion ◽  
Stress Measurement ◽  
High Strength Steels ◽  
High Strength ◽  
X Ray Diffraction ◽  
X Ray ◽  
Fracture Surfaces

X-ray fractography is a new method utilizing the X-ray diffraction technique to observe the fracture surface for the analysis of the micromechanisms and mechanics of fracture. X-ray residual stress has been confirmed to be a particularly useful parameter when studying the fracture surfaces of high strength steels. The method has been applied to the fracture surface of fracture toughness and fatigue specimens.

Sign in / Sign up

Export Citation Format

Share Document