A multi-year effort has been focused on optimizing the long-term oxidation performance of ingot-processed (IP) and oxide-dispersion strengthened (ODS) Fe3Al and iron aluminidebased coatings. Based on results from several composition iterations, a Hf-doped alloy (Fe28Al-2Cr-0.05at.%Hf) has been developed with significantly better high temperature oxidation resistance than other iron aluminides. ...

The addition of magnesium alloy elements followed by a flame-hardening process will change the phase configuration in gray cast iron. This study aims to investigate changes microstructure and hardness due these two processes. is conducted adding FeSiMg as carrier for magnesium. Metallographic examination observe was carried out using Scanning Electron Microscope (SEM) Energy-Dispersive X-ray Sp...

THE ANCIENT WORLD passed from the Stone Age through the Bronze and Iron Ages to our modern developed society—a society that is dependent on metals and alloys for its very existence. However, an impressive body of metallurgical knowledge developed in the thousands of years since ancient man first found copper and became curious enough to investigate the behavior of this naturally occurring, rela...

[1] The magma ocean process in the early history of the Earth has a great influence on the light element identities and contents of the core which subsequently affect the energy of the geodynamo provided by the compositional convection and the inner core growth through their effect on the phase diagram of iron alloy. In the present work, a twophase ab-initio molecular dynamics method is establi...

We present a case study where we use automated formal analysis to reason about problem-frame concerns. The descriptions of the problem domains, machine and requirements are written in the Alloy language. We show that an evaluation of results and counterexamples provided by a model finder can reveal useful information that can help remove inconsistencies as well as composition errors.

Experimental measurements of the residual resistivity x of the binary-alloy system Fe1−xCrx have shown anomalous concentration dependence which deviates significantly from Nordheim’s rule. In the low x 10% Cr concentration regime the resistivity has been found to increase linearly with x until 10% Cr where the resistivity reaches a plateau persisting to 20% Cr. In this paper we present ab initi...

Ductile Cast Iron is a widely used cast iron. iron applications are in various sectors of modern mechanical industries. has wide uses the field car industry, military industries, agricultural equipment, construction and mines. The production ductile faces many technical difficulties our local factories due to difficulty providing equipment technologies for its by common methods. In this study, ...

Motivation „ Formal techniques not yet widely adopted by programmers. „ Commercial pressure to produce higher quality software is increasing. Motivation „ Formal techniques not yet widely adopted by programmers. „ Commercial pressure to produce higher quality software is increasing. „ Software developers favour so-called lightweight techniques that provide immediate returns and sit comfortably ...

BACKGROUND Several methods that are currently used for contouring analysis have problems providing reliable and/or meaningful results. In this paper a solution to these problems is proposed in a form of a novel measure, which was developed based on requirements defined for contouring studies. MATERIALS AND METHODS The proposed distance deviation measure can be understood as an extension of th...