Recent progress in atom probe field ion microscopy (APFIM) and its applications to nanoscale microstructural studies of metallic materials are reviewed. By employing a three dimensional atom probe (3DAP), it is possible to map out elemental distributions in the real space with almost an atomic resolution, and chemical analysis of interfaces and nanoparticles can be made with improved accuracy i...

Introduction Typical operating parameters for steels used in the manufacture of power plant are compared against corresponding values for nickel alloys in aeroengines, in Table 1. In both cases, the service conditions are severe. But this is especially so for steels where the service life is many decades. The degree of reliability demanded of heat resistant steels is therefore extraordinary, an...

Strength and toughness are a couple of paradox as similar as strength-ductility trade-off in homogenous materials, body-centered-cubic steels in particular. Here we report a simple way to get ultrahigh toughness without sacrificing strength. By simple alloying design and hot rolling the 5Mn3Al steels in ferrite/austenite dual phase temperature region, we obtain a series of ferrite/martensite la...

Non-metallic inclusions are the impurities that solidified during steel continuous casting. The compositions, sizes and shapes of significantly affect steels' mechanical properties such as ductility, formability toughness. This paper mainly focuses on observation characterization non-metallic in high strength low alloy steels, especially is devoted to homogenization molten within copper mold ca...

The present study was carried out to investigate the effect of alloying elements and thermo-mechanical treatment (TMT) i.e. hot rolling and forging with different reduction ratios on the hardness (HV) and impact toughness (J) of heat-treated low alloy steels. An understanding of the combined effect of TMT and alloying elements and by measuring hardness, impact toughness, resulting from differen...

In real conditions, austenitic stainless steels solidify in non equilibrium and a two phases microstructure of austenite and ferrite is formed 1 . The aim of this work was to investigate the behaviour of both phases at tensile testing, especially to find out an eventual difference in the relaxation of the deformation energy and the effect of the two phases microstructure in workability. To achi...

• Reduction of hardware requirements for magnetic characterization. Current controlled magnetization to amplify the distortion. Algorithm obtain a high SNR signal representative Magnetic characterization skin pass elongation (0.2–8.9%) IF and DP steels. Higher sensitivity comparing with hysteresis loop DAME profile. The distortion analysis excitation (DAME) method has been recently proposed fac...