ferritic steels
Effects of Zr Addition on the Microstructure of 14%Cr4%Al ODS Ferritic Steels
... Cladding material development is essential for the real- ization of highly efficient high burn-up operation of the next generation nuclear systems, where numerous require- ments are needed: 1) resistance to neutron ...
5
Electrochemical Corrosion Behavior of Ferritic Steels in Molten (Li,Na,K)F
... of ferritic steels in molten fluorides is intrinsically an electrochemical process ...(ODS) ferritic steels from 600 o C to 900 o C, and they observed that the ODS steel/coolant interfacial ...
11
A New Approach on the Modelling of Isothermal Recrystallisation in Cold Rolled Ferritic Steels: An Application to Back Annealing of Low Carbon Sheet Steels
... A new approach on the modelling of isothermal recrystallisation in cold rolled ferritic steels based on Avrami equation is presented here. The new model corrects some of the fundamental shortcomings of the ...
6
Beneficial Effect of Sulfur State on High Temperature Steam Oxidation Resistance in High Chromium Ferritic Steels
... (Cr) ferritic steels improves remarkably high-temperature steam oxidation ...the steels gives such a beneficial ...the steels; one is the soluble S state in a solid solution of the steel, and ...
5
Synergistic Effects of Neutron Irradiation and Interstitial Impurities on Mechanical and Fracture Behaviors of Ferritic Steels
... and steels (Hong and Murty, 1993), the source and friction hardenings vary with test temperature and neutron radiation exposure as well as IIAs through ...two ferritic steels (A533B and A516Gr70) ...
8
Effect of Titanium Carbide Precipitates on the Ductility of 30 mass% Chromium Ferritic Steels
... The effect of morphology of Ti carbides on the ductility of 30 mass%Cr ferritic steels containing C and Ti was investigated by tensile test at low temperatures. C and Ti contents were varied from 0.011 to ...
6
Effect of Titanium on the Tensile Ductility of 30 mass% Chromium Ferritic Steels
... The effect of titanium on the ductility of 30% chromium ferritic steels was investigated by tensile testing at low temperatures. Carbon content is 0:023 0:002 mass%. Titanium content is varied from 0.051 to ...
5
Using local approaches to fracture to quantify the local conditions during the ductile-to-brittle transition in ferritic steels
... in ferritic steels, but currently there is no sufficiently adequate model, which correctly reproduce the competition between cleavage and ductile damage in the DBT ...
8
Effect of Radiation Exposure on the Hall-Petch Relation and its Significance on Radiation Embrittlement in Iron and Ferritic Steels
... The extensive data base on various reactor vessel surveillance capsule programs revealed the influence of alloying elements such as Cu, Ni and P on the changes in DBTT and upper shelf energy along with the superimposed ...
6
Toughness of Ultrafine Grained Ferritic Steels Fabricated by ARB and Annealing Process
... The temperature at which the transition in the fracture surface occurred decreased with decreasing the grain size. And finally no brittle fracture was observed even at 190 C in the both materials having submicrometer ...
10
Influences of the Dynamic Strain Aging on the J-R Fracture Characteristics of the Ferritic Steels for Reactor Coolant Piping System
... However, ferritic steels for reactor coolant piping system have operated in a range of dynamic strain aging (DSA) temperature, so that the fracture resistance could be reduced by the influence of DSA under ...
8
Lower bounds and saturation effects of dynamic fracture toughness in the brittle-to ductile transition regime of ferritic steels
... In the ductile-to-brittle transition (DBT) regime fracture toughness of ferritic steels is affected by an inherent scatter, which requires statistical evaluation of test data. A well-known method is the ...
10
High temperature performance of ferritic steels in fireside corrosion regimes: temperature and deposits
... show that the levels of Fe and O are similar at elevated temperatures between all four steels. As is shown in further part of the study on EDX mapping (Fig. 6), sulfur was detected in the oxide scales, suggesting ...
10
Estimation of quasi-static J-R curves from charpy energy and adaptation to ASTM E1921 reference temperature estimation for ferritic steels
... the steels tested mainly at 20-25 º C or 280-300 º C and described in Aurich [4], Blauel [12], Eberle [13], Yoon [14] and El-Fadaly [15] have been ...above steels (only those for which full transition range ...
8
The effect and interactions of interstitial hydrogen and nitrogen in ferritic steels
... Further testing of hydrogen treated materials has shown that at temperatures in the range -56 to -20°C hydrogen reduces the work hardening coefficient of Armco iron and mild steels with [r] ...
170
Hydrogen Dissolution into 10% Chromium Ferritic Steels during High Temperature Steam Oxidation
... the steels A, B and C without exposing to the steam ...the steels but the hydrogen desorption rate increased with increasing temperature over about 700 K regardless of the sulfur content in the ...
5
Electrochemical Corrosion of Ferritic 409 and 439 Stainless Steels 409 and 439 in NaCl and H2SO4 solutions
... of ferritic steels, which the chromium content are slightly above 10%, are not neither hardened by mechanical work nor heat treating and in some cases only, are ...The ferritic 409 stainless steel ...
12
The Behaviour of Steels in Atmospheres Containing CO and H2 and the Effect of Pretreatment and Gaseous Additives EUR 4691
... It was found that in these conditions mild steels, steels with low Cr-content and ferritic steels tend to form carbon deposits whereas austenitic steels and Ni-based alloys undergo super[r] ...
32
Influence of Material Characteristics on Effective Load Ratios at Elevated Temperatutres
... The evidence suggests that crack opening ratios for the 9/10%Cr steels at 600-625°C can be significantly lower than those for low alloy ferritic steels at 538-565°C for R <~2 (cf. Figures 3 and ...
8
Effect of Copper Addition on the Active Corrosion Behavior of Hyper Duplex Stainless Steels in Sulfuric Acid
... stainless steels (DSSs) with nearly equal fractions of ferrite ( ¡ ) and austenite ( £ ) phases are being increasingly used for various applications such as fuel gas desulphuriza- tion (FGD) facilities in fossil ...
8