نتایج جستجو برای: steel metallography

تعداد نتایج: 81509  

Journal: :Journal of Mathematical Sciences 2021

By using the developed finite-element models, we perform numerical investigation of nonstationary temperature fields and kinetics microstructural phase transformations in base material WWER -1000 reactor vessel (15Kh2NMFА steel) under conditions submerged-arc cladding protective anticorrosion layers austenitic materials. We comparative analysis results simulation obtained by two methods predict...

Journal: :روش های عددی در مهندسی (استقلال) 0
مرتضی شمعانیان اصفهانی m. shamanian مهدی صالحی و فخرالدین اشرفی زاده m. salehi and f. ashrafizadeh

the use of fe-al intermetallic compound coatings has been investigated in order to improve the tribological behaviour of carbon tool steel. the coatings were formed by a pack cementation process and subsequently diffusion annealing at 900˚c in an argon controlled atmosphere. the optimum diffusion time was selected on the basis of optimum thickness and tribological behaviour. the microstructure ...

Journal: :Journal of the Franklin Institute 1919

Journal: :Microscopy and Microanalysis 2002

Journal: :Journal of the Franklin Institute 1925

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2004
L S Kennison

In the preparation of the material and the interpretation of the results, I have had the cooperation of Dr. Mary B. Stark of the Flower Hospital Staff and the assistance of Miss A. K. Marshall of the Bell Telephone Laboratories. The photographs which accompany this paper are sufficiently described in the titles and need not be specifically dealt with here. 1 Lucas, "An Introduction to Ultra-Vio...

Journal: :Journal of Chemical Education 1962

Journal: :Scientific American 1909

Journal: :Metalurgi 2022

The mechanical improvement and "self-protection" properties are mainly needed to develop weather-resistant steel materials. In this study, A588 was given thermomechanical treatment (hot-rolling) followed by a quench-tempering process. is modified adding 1, 2, 3 wt% nickel the primary alloy. Steel made using hot rolling process at 750 ℃ for 1 hour with 70% thickness reduction. sample heat-treate...

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