scholarly journals Effect of Additional Minor Elements on Accumulation Behavior of Point Defects under Electron Irradiation in Austenitic Stainless Steels

2014 ◽  
Vol 55 (3) ◽  
pp. 438-442 ◽  
Author(s):  
Yoshihiro Sekio ◽  
Shinichiro Yamashita ◽  
Norihito Sakaguchi ◽  
Heishichiro Takahashi
Keyword(s):  
Point Defects ◽  
Electron Irradiation ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Minor Elements ◽  
Accumulation Behavior

Electron irradiation damage in austenitic stainless steels

1991 ◽  
Vol 179-181 ◽  
pp. 526-528 ◽  
Author(s):  
Jiguang Sun ◽  
Jiapu Qian ◽  
Zhuoyong Zhao ◽  
Jiming Chen ◽  
Zengyu Xu
Keyword(s):  
Electron Irradiation ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Irradiation Damage

Cr-Vacancy Elastic and Chemical Interactions in Irradiated Stainless Steels

1998 ◽  
Vol 540 ◽  
Author(s):  
E. P. Simonen ◽  
S. M. Bruemmer
Keyword(s):  
Grain Boundary ◽  
Point Defects ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Solution Annealing ◽  
Chemical Interactions ◽  
Radiation Induced ◽  
Solute Interactions ◽  
Present Evaluation ◽  
Nonequilibrium Segregation

AbstractInteractions between point defects and major solute strongly influence grain boundary concentrations during heat treatment, irradiation and annealing of austenitic stainless steels. Previous approaches to nonequilibrium segregation emphasize only elastic defect-solute interactions. The present evaluation of nonequilibrium concentrations at grain boundaries indicates chemical interactions unique to solution annealing and cooling during thermal nonequilibrium segregation (TNES). Subsequent to TNES, radiation-induced segregation and post-irradiation annealing are modeled and compared with measured changes in grain boundary composition. The latter two mechanisms are controlled by exchanges between vacancies and major solute such as Cr.

scholarly journals A positron annihilation study of defect accumulation in phosphorus- and titanium-alloyed austenitic stainless steels under electron irradiation at room temperature

2020 ◽  
pp. 27-34
Author(s):  
D. A. Perminov ◽  
Keyword(s):  
Positron Annihilation ◽  
Electron Irradiation ◽  
Stainless Steels ◽  
Room Temperature ◽  
Austenitic Stainless Steels ◽  
Positron Annihilation Spectroscopy ◽  
High Concentration ◽  
Noticeable Effect ◽  
Vacancy Defects ◽  
Positron Annihilation Study

The effect of phosphorus and titanium additions on the accumulation of vacancy defects in Cr16Ni15Mo3 austenitic stainless steels under electron irradiation at room temperature is studied by positron annihilation spectroscopy. It is shown that, at this temperature, phosphorus has no noticeable effect on the accumulation of vacancy defects. This is due to the low mobility of vacancies and the low concentration of impurities. Titanium, due to its high concentration, enhances the accumulation of vacancy defects during irradiation, but this effect is weak.

scholarly journals Molybdenum Effects on Pitting Corrosion Resistance of FeCrMnMoNC Austenitic Stainless Steels

Metals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 653 ◽  
Author(s):  
Heon-Young Ha ◽  
Tae-Ho Lee ◽  
Jee-Hwan Bae ◽  
Dong Chun
Keyword(s):  
Corrosion Resistance ◽  
Passive Film ◽  
Point Defects ◽  
Pitting Corrosion ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Passive State ◽  
Film Resistance ◽  
Pitting Corrosion Resistance ◽  
Mo Content

For Fe-based 18Cr10Mn0.4N0.5C(0–2.17)Mo (in wt %) austenitic stainless steels, effects of Mo on pitting corrosion resistance and the improvement mechanism were investigated. Alloying Mo increased pitting and repassivation potentials and enhanced the passive film resistance by decreasing number of point defects in the film. In addition, Mo reduced critical dissolution rate of the alloys in acidified chloride solutions, and the alloy with higher Mo content could remain in the passive state in stronger acid. Thus, it was concluded that the alloying Mo enhanced pitting corrosion resistance of the alloys through increasing protectiveness of passive film and lowering pit growth rate.

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