Microstructural featural features cover the size range of 0.0001 mm up to 1 mm in size, determined traditionally by the working range of optical microscopes. The discontinuition of the crystalline structure of the metal forms the grain boundaries.The relationship between grain size and strength can be given by the Petch equation… <Read in Full>
Microstructure of Alloys When atoms of different metallic elements are mixed together to form alloys an almost infinite variety of microstructures can be formed. Phase diagrams are like maps that show the ranges of temperature and compositions over which the different crystal structures possible in the system may exist under equilibrium conditions…. <Read in Full>
Phase Transformation in Cast Iron and Steel Carbon, too is uncommon among the alloying elements, in that it is a very small atom that forms interstitial solid solutions with iron. The range of compositions from 2% to 4.5% carbon gives rise to the very important group of engineering materials called cast irons, while the iron-carbon alloys that contain less than 2% carbon are called steels. Complicated phase transformations occur with various carbon content and in various temperature. <Read in Full>
Steel Industry Technology Roadmap The Steel Industry Technology Roadmap, released by American Iron and Steel Institute, is a highly important document. Metal Technet (MTN) appreciates its value and guidance to the steel industry. Since the original document is very long, Metal Technet provides a key-point summary for every part of it. For those who want to do a through study of the document, Metal Technet provides Link To The Document in the AISI site. <Read in Full>
Introduction to the Roadmap This summary is based on the second edition of the publication "Steel Industry Technology Roadmap", published by AISI on December 2001. The Technology Roadmap is organized into four sections, each focusing an a critical industry area. These areas include: process development, iron unit recycling, environmental leadership, and product properties. <Read in Full>
