Since 2004, the Italian Department for Civil Protection and the Ministry of Health have implemented a national program for the prevention of heat-health effects during summer, which to-date includes 34 major cities and 93% of the residents aged 65 years and over. The Italian program represents an important example of an integrated approach to prevent the impact of heat on health, comprising Hea...

There has been limited studies on corrosion behaviour of post-processed electron beam melted (EBM) Ti6Al4V, given that the factors affecting resistance AM Ti6Al4V remain unclear. This paper proposes using heat treatment method to improve pitting EBM Ti6Al4V. Different profiles alter microstructure A clear trend is observed between microhardness and α lath width. As-printed exhibits an inferior ...

Ultrasonic measurements have been performed for comprehensive microstructural characterisation in 9 % Cr ferritic steels. The variation in grain size, the effect of solution annealing temperature on microstructure developed, the variation in microstructure of the weld joints, the effect of post weld heat treatment and precipitation behaviour during thermal ageing and creep testing have been suc...

The present study aims to investigate the effect of weld geometry and geometrical shape imperfections on mechanical behavior welded joints under different post-weld heat treatment conditions. Finite element analyses were performed using local properties laser beam AA2198 obtained from micro-flat tensile test specimens. finite results show that, for as-welded condition that maximum strain was ob...

aqueous polymer quenchants are being used increasingly in steel heat treatment industries as a substitution for conventional quenchants. by adjusting the quench parameters of the polymeric media, it is possible to achieve desirable microstructure and mechanical properties in addition to reduction in distortion and cracking. in this work, polyalkylene glycol (pag) aqueous solution was used as th...

the effect of ferrite grain size on the fatigue and tensile properties of dual phase steels with a 0.25 volumefraction of martensite (vm) under different heat treatments was investigated. the heat treatments werehomogenized at 1200 oc along with several subsequent normalizations at 910 oc, resulting in differentmicrostructures and mechanical properties. after heat treatment, the obtained steels...

despite having some useful properties, stainless steels suffer from lack of suitable surface hardness. in this research electroless ni-b-tl coating was used with the aim to increase their surface hardness. the effects of nickel chloride, sodium borohydride, thallium nitrate and ethylendiamin on the chemical composition of coating were studied. to achieve an increase in hardness, the effects of ...

Transmission electron microscopy (TEM) revealed several ultrastructural changes induced by exposure to cadmium in ciliated protozoan, Stylonychia mytilus. The main cytoplasmic alterations in the post treated cells were:-condensation of the ground cytoplasm, mitochondrial disorganization, cytoplasmic vacuolization, accumulation of electron dense bodies and autophagosome formation. At the nuclear...