نتایج جستجو برای: dynamic strain ageing

تعداد نتایج: 641406  

Strain induced precipitation in HSLA-100 steel was investigated by conducting hotcompression and relaxation tests at temperature range of 850°C to 1100°C and strain rate of 0.001s-1 to 1s-1. The absence of dynamic recrystallization at temperatures below 1000°C was attributedto the influence of dynamic precipitation. The stress relaxation tests showed that strain inducedprecipitation is possible...

Journal: :Journal of Nuclear Materials 2021

• HE increased with the DSA susceptibility of RPV steels at 250?288 °C. Concentrated hydrogen in high binding energy traps by straining regime. Enhanced as a consequence plasticity localization due to and hydrogen. HESIV HELP are dominant mechanisms Tensile tests air pre-charged smooth specimens slow strain rate notched hydrogenated high-temperature water (HTW) elevated temperatures (250?288 °C...

Journal: :iranian journal of materials forming 2015
g. r. ebrahimi a. momeni h. eskandari

strain induced precipitation in hsla-100 steel was investigated by conducting hotcompression and relaxation tests at temperature range of 850°c to 1100°c and strain rate of 0.001s-1 to 1s-1. the absence of dynamic recrystallization at temperatures below 1000°c was attributedto the influence of dynamic precipitation. the stress relaxation tests showed that strain inducedprecipitation is possible...

2005
U. Ehrnstén M. Ivanchenko V. Nevdacha Y. Yagodzinskyy A. Toivonen Todd R. Allen Peter J. King Lawrence Nelson H. Hänninen

Intergranular stress corrosion cracking has occurred in BWR environments in non-sensitised, cold-worked austenitic stainless steel materials. The affecting parameters are so far not fully known, but deformation mechanisms may be decisive. The effect of cold deformation and nitrogen content on the deformation behaviour of austenitic stainless steels was investigated. The materials were austeniti...

2006
Z Xu R C Picu

The close-range interaction of dislocations and solute clusters in the Al–Mg binary system is studied by means of atomistic simulations. We evaluate the binding energy per unit length of dislocations to the thermodynamically stable solute atmospheres that form around their cores, at various temperatures and average solid solution concentrations. A measure of the cluster size that renders linear...

Journal: :The British journal of nutrition 2007
Hiromi Kimoto-Nira Chise Suzuki Miho Kobayashi Keisuke Sasaki Jun-Ichi Kurisaki Koko Mizumachi

The effects of oral administration of a lactococcal strain on physiological changes associated with ageing were investigated using senescence-accelerated mice (SAM). SAM develop normally, but then show an early onset and irreversible advancement of senescence. SAMP6 is a SAM strain that develops osteoporosis with ageing. Oral administration of heat-killed Lactococcus lactis subsp. cremoris H61 ...

2012
A. Chatterjee A. Sarkar N. Gayathri P. Mukherjee P. Barat

An experimental study is presented on the effect of microstructural change on the Portevin-Le Chatelier effect behaviour of Al-2.5%Mg alloy. Tensile tests are performed on the as received and heat treated (at 400 oC for 16 hours) samples for a wide range of strain rates. The serrations observed in the stress-time curve are investigated from statistical analysis point of view. Microstructures of...

Journal: :iranian journal of materials forming 2014
e. kevanlo g.r. ebrahimi s.a.a. sani a. momeni

in this work dynamic recrystallization behavior of aisi 403 martensitic stainless steel was studied using hot compression tests over temperature range of 900 c -1200 c and strain rate range of 0.001 s-1 - 1 s-1. the obtained flow curves showed that the hot compression behavior of the alloy is controlled by dynamic recrystallization. the flow stress and strain corresponding to the critical, pe...

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