Browsing by Author "Akgün, Mahir"
Now showing items 1-17 of 17
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AISI H13 sıcak iş takım çeliğinin işlenmesinde kesme kuvvetinin deneysel, nümerik ve istatistiksel olarak incelenmesi
Akgün, Mahir (Iğdır Üniversitesi, 2022)Bu çalışmada, seramik kesici takımlar ile AISI H13 sıcak iş takım çeliğinin tornalanmasında kesme parametrelerinin kesme kuvveti üzerindeki etkileri araştırılmıştır. Tornalama deneyleri, üç farklı kesme hızında (120, 180 ... -
Analysis and optimization of cutting tool coating effects on surface roughness and cutting forces on turning of AA 6061 alloy
Akgün, Mahir; Kara, Fuat (Hindawi Limited, 2021)The present work has been focused on cutting force (Fc) and analysis of machined surface in turning of AA 6061 alloy with uncoated and PVD-TiB2 coated cutting inserts. Turning tests have been conducted on a CNC turning ... -
Effect of Mo addition on microstructure, mechanical and machinability properties of Cr-PM steels
Erden, Mehmet A.; Akgün, Mahir (SAGE Publications Ltd, 2022)In this work, it was investigated the effect of molybdenum (Mo) addition on machinability, mechanical properties, and microstructure of Cr steels produced by using powder metallurgy method. Tensile and hardness experiments ... -
Effect of PVD-TiN and CVD-Al2O3 coatings on cutting force, surface roughness, cutting power, and temperature in hard turning of AISI H13 steel
Akgün, Mahir; Özlü, Barış; Kara, Fuat (Springer, 2023)The present work focusses on the hard turning of AISI H13 tool steel with PVD-TiN- and CVD-Al2O3-coated ceramic cutting tools. In this context, hard turning tests have been performed under dry cutting conditions at five ... -
Estimation of Surface Roughness and Flank Wear in Milling of Inconel 625 Superalloy
Akgün, Mahir; Demir, Halil (World Scientific, 2021)The main objective of this work is to experimentally investigate and statistically evaluate the effects of the milling parameters on surface roughness (Ra) and flank wear (Vb) in the milling of Inconel 625. Thus, milling ... -
Evaluation of the effect of hot forging and cooling conditions on the microstructure, hardness and machinability of medium carbon DIN 41Cr4 steel
Özlü, Barış; Akgün, Mahir; Demir, Halil (Gazi University, 2023)This work DIN 41Cr4 tempered steel of hot forging applied focuses on the investigation of machinability of samples obtained by cooling in sand and air. The machinability evaluation has made in terms of main cutting force ... -
Evaluation of the mechanical properties and machinability of chromium and molybdenum-added powder metallurgy steels
Vassouf, Abdul Rahman; Akgün, Mahir; Erden, Mehmet Akif (SAGE Publications Ltd, 2022)The present study focuses on the microstructure, mechanical properties, and machining aspects of powder metallurgy (PM) steel containing different rates of chromium (Cr) and molybdenum (Mo). PM steel alloys were pressed ... -
FDM yöntemiyle üretilen abs, pla ve petg numunelerin yüzey pürüzlülüğü ve çekme dayanımının modellenmesi ve optimizasyonu
Kuruoğlu, Yasin; Akgün, Mahir; Demir, Halil (KERİM ÇETİNKAYA, 2022)Bu çalışma, Eriyik Yığma Modelleme (FDM) teknolojisi kullanılarak üretilen numunelerin yüzey kalitesi ve çekme dayanımı üzerinde ABS, PLA ve PETG filamentlerin ve baskı parametrelerinin etkisini incelemektedir. Bu amaçla, ... -
Influence of Ti and Nb addition on the microstructure, mechanical, and machinability properties of 316L stainless steel fabricated by powder metallurgy
Erden, Mehmet Akif; Uzun, Fatma Gül; Akgün, Mahir; Gökçe, Hasan (Walter de Gruyter GmbH, 2023)In this study, titanium and niobium element powders in determined amounts (0.25 and 0.5wt%) were added into the 316L stainless steel matrix by means of powder metallurgy (PM) technology, either singly or in pairs, and the ... -
Invar 36 alaşımının seramik takımlar ile işlenmesinde kesme kuvveti bileşenleri ve yüzey pürüzlülüğü bakımından işlenebilirliğinin değerlendirilmesi
Akgün, Mahir (Bilecik Şeyh Edebali Üniversitesi, 2022)Invar 36, düşük ısıl genleşme katsayısı nedeniyle uzay ve havacılık alanında yüksek boyutsal stabilitenin gerekli olduğu mühendislik uygulamalarında kullanılan bir malzemedir. Bu çalışmada, kesme kuvveti bileşenleri (Fc, ... -
Measurement and optimization of cutting forces, surface roughness and temperature in turning of AZ91 Mg alloy
Akgün, Mahir (2023)This study presents the experimental and statistical examination of machinability of AZ91 alloy, in terms of cutting forces (Fc, Ff, and Fp), surface roughness (Ra) and cutting temperature (T). In the first step, test ... -
Optimization and finite element modelling of tool wear in milling of inconel 625 superalloy
Akgün, Mahir; Demir, Halil (Gazi Üniversitesi, 2021)This study focuses on optimization of cutting conditions and numerical analysis of flank wear in milling of Inconel 625 superalloy using PVD AlTiN and CVD TiCN/Al2O3/TiN-coated carbide inserts. The milling experiments have ... -
Optimization of cutting parameters affecting surface roughness in turning of inconel 625 superalloy by cryogenically treated tungsten carbide inserts
Akgün, Mahir; Demir, Halil (Springer International Publishing, 2021)This work focuses on developing the mathematical model of surface roughness (Ra) in the turning of Inconel 625 superalloy with cryogenically treated tungsten carbide inserts. The influence of cryogenic treated on the ... -
Optimization of cutting parameters and analysis of effects of artificial aging on machinability of AA7075 alloy
Akgün, Mahir; Yurtkuran, Hakan; Ulaş, Hasan Basri (Pamukkale Universty / Pamukkale Üniversitesi, 2020)In this study, The effect of aging heat treatment on machinability of AA7075 aluminum alloy is investigated. Turning experiments were performed on the aluminium test pieces obtained commercially as T6 heat treated and the ... -
Optimization of process parameters affecting cutting force, power consumption and surface roughness usıng taguchi-based gray relatıonal analysıs in turnıng aısı 1040 steel
Akgün, Mahir (World Scientific, 2022)This study focuses on optimization of cutting conditions and modeling of cutting force (Fc), power consumption (P), and surface roughness (Ra) in machining AISI 1040 steel using cutting tools with 0.4mm and 0.8mm nose ... -
Optimization of surface roughness in turning Mg2Si particle reinforced magnesium
Akgün, Mahir; Demir, Halil; Çiftçi, İbrahim (Gazi Üniversitesi, 2018)In this study, Mg2Si reinforced Mg alloy material was produced by adding 10 % Al12Si alloy ingot to Mg matrix by conventional casting method and then the melt was poured into a metal mould in cylindrical form. Machining ... -
Performance analysis of electrode materials in electro discharge machining of monel K-500
Akgün, Mahir (IOP Publishing, 2022)The present work focusses on the electrical discharge machining (EDM) of Monel K 500 super alloy with different electrodes. The study's objective is to examine the effects of process parameters and electrode materials (Cu, ...