Embrittlement of irradiated ferritic/martensitic steels in the absence of irradiation hardening

2008 ◽  
Vol 377 (3) ◽  
pp. 427-437 ◽  
Author(s):  
R.L. Klueh ◽  
K. Shiba ◽  
M.A. Sokolov
Keyword(s):  
Martensitic Steels ◽  
Irradiation Hardening

Irradiation hardening of reduced activation martensitic steels

1996 ◽  
Vol 233-237 ◽  
pp. 319-325 ◽  
Author(s):  
A. Kimura ◽  
T. Morimura ◽  
M. Narui ◽  
H. Matsui
Keyword(s):  
Martensitic Steels ◽  
Irradiation Hardening

Microstructure and Mechanical Properties of n-Irradiated Fe-Cr Model Alloys

2006 ◽  
Vol 981 ◽  
Author(s):  
Milena Matijasevic ◽  
Abderrahim Al Mazouzi
Keyword(s):  
Mechanical Stability ◽  
Tensile Tests ◽  
High Energy ◽  
Mechanical Tests ◽  
Test Results ◽  
Martensitic Steels ◽  
Irradiation Hardening ◽  
Cr Concentration ◽  
Accelerator Driven Systems

AbstractHigh chromium ( 9-12 wt %) ferritic/martensitic steels are candidate structural materials for future fusion reactors and other advanced systems such as accelerator driven systems ADS). Their use for these applications requires a careful assessment of their mechanical stability under high energy neutron irradiation and in aggressive environments. In particular, the Cr concentration has been shown to be a key parameter to be optimized in order to guarantee the best corrosion and swelling resistance, together with the least embrittlement.In this work, the characterization of the neutron irradiated Fe-Cr model alloys with different Cr % with respect to microstructure and mechanical tests will be presented. The behavior of Fe-Cr alloys have been studied using tensile tests at different temperature range ( from -160°C to 300°C). Irradiation-induced microstructure changes have been studied by TEM for two different irradiation doses at 300°. The density and the size distribution of the defects induced have been determined. The tensile test results indicate that Cr content affects the hardening behavior of Fe-Cr binary alloys. Hardening mechanisms are discussed in terms of Orowan type of approach by correlating TEM data to the measured irradiation hardening.

On the transition toughness of two RA martensitic steels in the irradiation hardening regime: a mechanism-based evaluation

2002 ◽  
Vol 307-311 ◽  
pp. 1011-1015 ◽  
Author(s):  
G.R. Odette ◽  
H.J. Rathbun ◽  
J.W. Rensman ◽  
F.P. van den Broek
Keyword(s):  
Martensitic Steels ◽  
Irradiation Hardening

Irradiation Hardening in Ferritic/Martensitic Steel P92 during Ar-Ions Irradiation at Elevated Temperature

2013 ◽  
Vol 378 ◽  
pp. 289-292 ◽  
Author(s):  
Jun Zhu ◽  
Yin Zhong Shen
Keyword(s):  
Elevated Temperature ◽  
Martensitic Steel ◽  
Martensitic Steels ◽  
Irradiation Hardening ◽  
Hardening Behavior ◽  
First Time

The irradiation hardening behavior in a commercial ferritic/martensitic steel P92 has been investigated through 250KeV Ar-ions irradiations to a dose of 10dpa at 473, 673 and 973K combined with nanoindentation techniques. The results show that irradiation-induced hardening was observed at the all irradiation temperatures. There appear to have no previous reports of the irradiation-induced hardening at the temperature higher than 873K in ferritic/martensitic steels. Irradiation-induced hardening at elevated temperature of 973K has been found, for the first time, in ferritic/martensitic steel. The irradiation-induced hardening at 973K in the ferritic/martensitic steel P92 may be ascribed to the defects in the steel generated by Ar-ions irradiation.

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