Presenting a New Method for Earthquake Relief Center Location Allocation based on Whale Optimization Algorithm
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJE-34-4_003
تاریخ نمایه سازی: 6 اردیبهشت 1400
Abstract:
This research describes an optimization and rejuvenation of the heat treatment process for a nickel base superalloy grade GTD۱۱۱ after long-term service. The aging heat treatment variables examined in this study included primary aging temperature, primary aging time, secondary aging temperature, and secondary aging time. The resulting materials were examined using Taguchi method design of experiments to determine the resulting material hardness test and observed with the hot tensile test, scanning electron microscopy, and energy dispersive X-ray spectroscopy. The experimental results showed what happens following optimization with the heat treatment parameters of a primary aging temperature of ۱۱۲۰ °C, primary aging time of ۳ h, secondary aging temperature of ۸۴۵ °C, and secondary aging time of ۲۴ h. The material, after rejuvenation heat treatment via optimization with γ′ particle characteristics, had a coarse square shape, spherical shape of γ′, and fine γ′ precipitate distributed on the parent phase, which affects the mechanical properties of the material. fine γ′ precipitate distributed on parent phase, which affects the mechanical properties of the material.
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Authors
A. Zarepor Ashkezari
Department of Civil Engineering, Yazd Branch, Islamic Azad University, Yazd, Iran
H. Mosalman Yazdi
Department of Civil Engineering, Maybod Branch, Islamic Azad University, Maybod, Iran
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