دانلود مقاله مشخصات آلیاژ Ti-6AL-4V – مدلسازی المان محدود

دانلود مقاله مشخصات آلیاژ Ti-6AL-4V – مدلسازی المان محدود

دانلود مقاله مشخصات آلیاژ Ti-6AL-4V – رفتار سیلان آلیاژ Ti-6AL-4V تجاری با ریز ساختار لایه ای در فورج همدما از حمید امیدوار*، بهزادفلاح قنبری** و مرتضی تمیزی فر

Flow behavior of commercial grade Ti-6Al-4V with lamellar structure in isotherm forging and kinetic analysis of process
H. Omidvar, B. Fallah Ghanbary and M. Tamizifar
Amirkabir University of Technology, Department of Metallurgical Engineering
Iran University of Science and Technology, Department of Materials and Metallurgical Engineering

Abstract: In this paper, plastic flow behavior and micro structural evolution of Ti-6Al-4V alloy in temperature range of 750-
۱۰۵۰ °C and strain rate range of 0.001-0.1 (S-1) in isotherm compression condition were investigated. The purpose was to estimate
activation energy of globularization of lamellar structure and analyze this process kinetically. True Stress-strain curves obtained
at the temperatures below 950 °C indicate a limited amount of flow softening imputed to a dynamic recrystallization occuring at
about 950 °C. In contrast, at higher temperatures, the flow stress increases linearly with plastic strain until at temperatures about
۱۰۱۵°C where flow stress becomes nearly independent of the temperature. By analyzing flow stress data via Zener-Hol-lomon
and sellars equation, Q activation energy of dynamic recrystallization was estimated and structural equation of plastic flow was
obtained, whixh were comparable to results raeched by other investigators.

دانلود مقاله مشخصات آلیاژ Ti-6AL-4V – مدلسازی المان محدود

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