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1.
Improvement of Intergranular Stress Corrosion Crack Susceptibility of Austenite Stainless Steel through Grain Boundary Engineering 总被引:1,自引:0,他引:1
Weizhong JIN Sen YANG Hiroyuki KOKAWA Zhanjie WANG Yutaka S.Sato 《材料科学技术学报》2007,23(6):785-789
Intergranular stress corrosion crack susceptibility of austenite stainless steel was evaluated through threepoint bending test conducted in high temperature water. The experimental results showed that the frequent and efficient introduction of low energy coincidence site lattice boundaries through grain boundary engineering resulted in an apparent improvement of the intergranular stress corrosion crack resistance of austenite stainless steel. 相似文献
2.
Duplex stainless steel (DSS) grades are used in pulp mills for their superior properties and resistance to general corrosion.
However, stress corrosion cracking (SCC) of DSS equipment has been experienced in different pulp mills. The susceptibility
of DSS grades to SCC can be mainly attributed to the various heating processes involved during the manufacturing of industrial
equipments, especially welding. It is generally understood that heating cycles during welding may affect the dual microstructure
(ferrite/austenite ratio) of the steel, making it more prone to cracking in aggressive environments such as chlorides and
caustics and further exposure to high temperatures. Welded 2205 DSS failed in white liquor (mainly NaOH + Na2S) was examined for SCC crack morphology and microstructure. Heat-treated 2205 DSS samples were tested in simulated white
liquor to see the effect of microstructure on SCC susceptibility. Austenite is more susceptible to SCC than ferrite, but the
SCC susceptibility primarily depends on the composition of the alloy and the chemistry of the exposure environment. 相似文献
3.
Juan Asensio-Lozano Julio Tito Panta-Mesones 《Materials and Manufacturing Processes》2008,23(4):357-362
The tensile properties of hot-rolled multiphase steel after heat treatment were analyzed on a laboratory scale. Subcritical treatments applied to the hot-rolled strip revealed an increase in the yield stress and elongation with increasing temperature. Normalizing of the strip at 920°C notably improved the ductile response, while both the yield stress and the anisotropy of every property evaluated at 0°, 45°, and 90° to the rolling direction in the rolling plane were significantly reduced. 相似文献