Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu

Ergene, Berkay

doi:10.17341/gazimmfd.934143

Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu

Berkay ERGENE (Pamukkale Üniversitesi, Teknoloji Fakültesi, Makine Mühendisliği Bölümü, Denizli, Türkiye)

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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Yıl: 2022 Cilt: 37 Sayı: 1 Sayfa Aralığı: 469 - 484 Metin Dili: Türkçe DOI: 10.17341/gazimmfd.934143 İndeks Tarihi: 29-07-2022

Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu

Öz:

Metal eklemeli imalatta en yaygın kullanılan alaşımlar olan Inconel 718 ve Ti6Al4V otomotiv, uzay-uçak, savunma sanayii, biyomedikal gibi bir çok alandaki uygulamalarda tercih edilmektedirler. Bilindiği üzere, fonksiyonel hafifletilmiş parçalar, hafif olmalarına karşın sergilemiş oldukları yüksek spesifik dayanımdan dolayı araştırmacıların ilgi odağı haline gelmiştir. Artan ilgilerin bir sonucu olarak da üzerine gelen yükü homojen dağıtma, yükü ve sesi iyi düzeyde absorbe etme gibi üstün özelliklere sahip olan hafifletilmiş parçaların yapılan tasarımı katman katman gerçek ürüne dönüştüren eklemeli imalat (Eİ) teknolojisi ile üretilme fikri ön plana çıkmıştır. Seçici lazer ergitme (SLE) ve elektron ışın ergitme (EIE) gibi Eİ yöntemlerinin geleneksel imalat yöntemlerine nazaran bir çok avantajı olmasına ragmen, üretim sırasında parçada meydana gelen kalıntı gerilim oluşumları, yüksek yüzey pürüzlülüğü ve distorsiyonlar nedeniyle, ilgili imalat yöntemleri geliştirilmeye ihtiyaç duymaktadır. Bu bağlamda, eklemeli imal edilen hücresel yapıların deneysel olarak kalıntı gerilim ve distorsiyon ölçümleri oldukça zor ve zaman alıcıdır. Bu çalışmada ise, biyomedikal alanda iskele ve implant çekirdek yapısı olarak kullanılan hücresel yapılar ele alınmıştır. İmplantın yükü kemiğe oranla daha fazla taşıması nedeniyle kemiğin güç kaybetmesi anlamına gelen stress shielding olgusunu minimize eden kemik-implant arasındaki osseointegrasyonu geliştiren bu hücresel yapılar % 100, % 73,4 ve % 42,6 doluluk oranı ile tasarlanmıştır. Bu hücresel yapıların Inconel 718 ve Ti6Al4V malzemelerden SLE metoduyla üretimi sırasında meydana gelen kalıntı gerilmeler (σx, σy, ve σz), distorsiyonlar, plastik birim şekil değişimleri ve meydana gelen maksimum sıcaklık değerleri Eİ simülasyon programı Amphyon 2021 ile tespit edilmiştir. Elde edilen sonuçlar göstermektedir ki, Ti6Al4V parçalar, Inconel 718 parçalara göre daha fazla deplasman göstermektedir. Çatlak oluşumunun hangi bölgede gerçekleşebileceğine dair öngörü sağlayan plastik birim şekil değişimleri ise parçaların alt köşe bölgelerinde, destek yapının bittiği, asıl parçanın yer aldığı bölgelerde lokalize olmuştur. Ayrıca, parçalardaki maksimum sıcaklık değerleri imalat yüksekliğinin artmasıyla birlikte artış göstermekte ve her iki malzeme türü için de doluluk oranları % 73,4 ve % 42,6 olan parçalarda kritik bir imalat yüksekliğinden sonra tam dolu parçaya nazaran daha fazla maksimum sıcaklık değerleri gözlemlenmiştir.

Anahtar Kelime: Kalıntı gerilme Seçici lazer ergitme Biyomedikal Simülasyon Amphyon 2021

Simulation of the production of Inconel 718 and Ti6Al4V biomedical parts with different relative densities by selective laser melting (SLM) method

Öz:

Inconel 718 and Ti6Al4V which are the most widely used alloys in metal additive manufacturing, are preferred in applications in many fields such as automotive, aerospace and biomedical. As it is known, functional lightweight parts attract the attention of researchers due to their high specific strength despite their light weight. As a result of the increasing interest, the idea of producing lightweight parts with superior properties such as homogeneous distribution of the load and good absorption with additive manufacturing (AM) technology has come to the fore. Although AM methods such as selective laser melting (SLE) have many advantages over traditional manufacturing methods, residual stresses and distortions occur in the part during production, and their measurements in cellular structures are experimentally very difficult and time consuming. In this study, cellular structures used as scaffold and implant core structure in the biomedical field were designed with 100%, 73.4% and 42.6% infill rates. The residual stresses (σx, σy, and σz), distortions, plastic strains and maximum temperature values that occur during the production of these cellular structures from Inconel 718 and Ti6Al4V materials by SLM method were determined by the Amphyon 2021 AM simulation program. According to the obtained results, plastic strains, which provide a prediction of crack formation, were localized in the corner regions between the support structure and the main part. In addition, after a critical manufacturing height, higher maximum temperature values were observed in the cellular structures than the full structure.

Anahtar Kelime:

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	Ergene B (2022). Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu. , 469 - 484. 10.17341/gazimmfd.934143
Chicago	Ergene Berkay Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu. (2022): 469 - 484. 10.17341/gazimmfd.934143
MLA	Ergene Berkay Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu. , 2022, ss.469 - 484. 10.17341/gazimmfd.934143
AMA	Ergene B Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu. . 2022; 469 - 484. 10.17341/gazimmfd.934143
Vancouver	Ergene B Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu. . 2022; 469 - 484. 10.17341/gazimmfd.934143
IEEE	Ergene B "Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu." , ss.469 - 484, 2022. 10.17341/gazimmfd.934143
ISNAD	Ergene, Berkay. "Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu". (2022), 469-484. https://doi.org/10.17341/gazimmfd.934143

APA	Ergene B (2022). Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu. Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, 37(1), 469 - 484. 10.17341/gazimmfd.934143
Chicago	Ergene Berkay Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu. Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi 37, no.1 (2022): 469 - 484. 10.17341/gazimmfd.934143
MLA	Ergene Berkay Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu. Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, vol.37, no.1, 2022, ss.469 - 484. 10.17341/gazimmfd.934143
AMA	Ergene B Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu. Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi. 2022; 37(1): 469 - 484. 10.17341/gazimmfd.934143
Vancouver	Ergene B Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu. Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi. 2022; 37(1): 469 - 484. 10.17341/gazimmfd.934143
IEEE	Ergene B "Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu." Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, 37, ss.469 - 484, 2022. 10.17341/gazimmfd.934143
ISNAD	Ergene, Berkay. "Farklı bağıl yoğunluklardaki Inconel 718 ve Ti6Al4V biyomedikal parçaların seçici lazer ergitme (SLE) metoduyla üretiminin simülasyonu". Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi 37/1 (2022), 469-484. https://doi.org/10.17341/gazimmfd.934143