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Application Study of Value Electron Theory on Low Multi-alloy Steel

Author: HuShiTao
Tutor: LiWei
School: Jinan University
Course: Materials Science
Keywords: Wear-resistant steel Valence electron structure Unit cell proportion Phase structure factor Composition design
CLC: TG111.1
Type: Master's thesis
Year: 2006
Downloads: 194
Quote: 0
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Abstract


Multiple low-alloy the wear steel is widely used in metallurgy , building materials , electricity, machinery , industrial abrasive wear condition of a class of alloy steel , the research and development of multiple low alloy wear-resistant steel with high hardness and high strength and toughness has scientific significance . engineering application value. In this context , using valence electron theory of valence electrons of the steel structure of the phase transition and mechanical properties of multiple low alloy wear-resistant steel . Alloying elements into the crystal , the alloy atoms either to displace the form of atoms into the carbon atoms in the unit cell , the same can also be replaced in the form of atoms into the lattice of the carbon atoms . This article modeled unit cell containing carbon alloy valence electron structure analysis model and price electronic structure calculation methods , the proposed non - carbon alloy elements into the electronic structure of the alloy price no carbon cell analysis model and the valence electron structure calculation methods , which can complete to calculate the various components of austenite and martensite valence electronic structure of multiple low-alloy steel . In this paper, the calculation of self- preparation program , calculated valence electron structure parameters 26CrMnSiNiMo wear-resistant steel , using the parameters from the electronic level analysis phase change alloy elements on steel and heat treatment . Valence electron structure of the unit cell of phase transformation and mechanical properties of the alloy steel not only with the valence electrons of a single unit cell parameters , with the proportion of the unit cell . To this end, this paper on the basis of previous mathematical and statistical formulas to calculate the steel austenitic and martensitic unit cell proportion with the total number of valence electrons in the unit cell of the strongest bond . View of the formation of single phase unit cell structure factor can not accurately reflect the influence of alloying elements on steel mechanical properties , the proposed macro- phase structure formation factor to take into account a number of unit cell ( ? ) Consider the basis of the macro - phase structure of the alloy steel elements forming factor alloy steel mechanical properties ( hardness, tensile strength , impact toughness ) and the empirical formula of the relationship between the atomic percentage of the elements in the steel , low alloy by four kinds of engineering wear-resistant steel validation , the empirical formula calculated and measured values ​​of error is less than 5.9% . The empirical formula for multiple low-alloy steel components designed to provide a reference .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metallurgy and Heat Treatment > Metallurgy ( Physical Metallurgy ) > Physics of metals > The electron theory of metals
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