Laser Powder Bed Fusion of AISI 310S and Inconel 625 with CW and PW Emissions
Başlık çevirisi mevcut değil.
- Tez No: 712448
- Danışmanlar: DR. ALİ GÖKHAN DEMİR, DOÇ. DR. BEDRİ ONUR KÜÇÜKYILDIRIM, DR. LEONARDO CAPRİO
- Tez Türü: Yüksek Lisans
- Konular: Makine Mühendisliği, Mechanical Engineering
- Anahtar Kelimeler: Laser powder bed fusion, CW emission, PW emission, AISI 310s, Inconel 625, mechanical characterization, compression test
- Yıl: 2021
- Dil: İngilizce
- Üniversite: Polıtecnıco Dı Mılano
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: Belirtilmemiş.
Özet
Özet yok.
Özet (Çeviri)
Laser powder bed fusion technology is a type of additive manufacturing that builds the products layer by layer. Each layer is completely melted with a laser source and it is followed by solidification. The LPBF is a very advantageous technology to build complex structures with its various choices of material resulting in outstanding performance. In recent years the effect of emission strategy is started to be investigated from various aspects such as productibility or melt pool stability. The effect of emission strategy on different properties is also being studied in this thesis work. In this thesis, two different materials are used. AISI 310S and Inconel 625 chosen to be the two materials processed by the LPBF technique due to their high corrosion resistance at high temperatures and good mechanical properties such as YS's reaching up to 300MPa for AISI 310 and 490MPa for Inconel 625. It has been stated with different studies that AM could be an outstanding choice of production of heat exchangers due to generic design, which could result in increased efficiency, this study is focussing on the LPBF technique for the production of a recuperative burner. Changing the emission strategy throughout the deposition of the final product could lead to a uniform structure due to the stabilization of the melt pools. To this end, both materials have been used to produce samples made of a different set of combinations of different emission strategies, hatch distance and scanning speed to understand the effect of the emission strategy on the two different alloys. A customized LPBF system has been used. The SLM machine used in this system is 3DNT LLA150. Density, porosity, microstructure, microhardness and compression properties of produced samples have been investigated throughout the experiment campaign. The results and the effect of the different sets of parameters have been analyzed with Minitab software using ANOVA. The materials have been successfully deposited with the mean porosity values of 0.2% and 0.9% respectively for AISI 310s and Inconel 625. In terms of compression characteristics of the studied materials, the influence of the emission technique was insignificant. Though it has been shown to be significant for density as predicted. Hatch distance and scanning speed appear to impact the porosity of Inconel 625 samples. Increasing the scanning speed and hatch distance, as expected, resulted in a decrease in relative density and, as a result, increased porosity. The microhardness analysis revealed that none of the studied factors has a significant influence. The mean compressive yield strengths are 600.9 MPa and 702.9MPa respectively for AISI310S and Inconel 625 indicating that both materials are promising to be produced by LPBF for the recuperative burner. Yet further analyzes are required to understand the materials characterization at high temperatures.
Benzer Tezler
- Eklemeli imalat yöntemiyle farklı oryantasyonlarda üretilen 316l paslanmaz çeliğine ısıl işlem etkilerinin incelenmesi
Effect of heat treatment on 316l stainless steel manufactured via additive manufacturing at different build orientations
KASIM DAMGA
Yüksek Lisans
Türkçe
2025
Makine MühendisliğiYıldız Teknik ÜniversitesiMakine Mühendisliği Ana Bilim Dalı
DOÇ. DR. ASLI GÜNAY BULUTSUZ
- Investigation of the damping effectiveness of particle damper integrated structures design produced by laser powder bed fusion under different boundary conditions
Lazerle toz yatağında füzyon ile üretilmiş parçacık sönümleyici entegreli yapıların tasarımlarının sönüm etkinliğinin farklı sınır koşulları altında incelenmesi
BİROL ÖZÇEVİK
Yüksek Lisans
İngilizce
2023
Makine Mühendisliğiİstanbul Teknik ÜniversitesiMakine Mühendisliği Ana Bilim Dalı
DOÇ. DR. EMRECAN SÖYLEMEZ
- The influence of additive manufacturing process parameters on residual stress of 17-4 PH stainless steel parts manufactured by laser powder bed fusion additive manufacturing system
Seçici lazer toz yatağı eklemeli imalat yöntemi ile üretilmiş 17-4 PH paslanmaz çeliğinde eklemeli imalat proses parametrelerinin kalıntı gerilimler etkisi
GÖKHAN ÇELİK
Yüksek Lisans
İngilizce
2023
Metalurji MühendisliğiOrta Doğu Teknik ÜniversitesiMetalurji ve Malzeme Mühendisliği Ana Bilim Dalı
PROF. DR. CEMİL HAKAN GÜR
DOÇ. DR. CANER ŞİMŞİR
- Laser powder bed fusıon fabrıcated hastelloy X: effect of heat treatment on mıcrostructural evolutıon, mechanıcal propertıes and hıgh-temperature oxıdatıon behavıor
Lazer toz yatakli ergitme ile üretilmiş hastelloy x: isil işlemin mikroyapisal evri̇m, mekanik özellikler ve yüksek sicaklik oksidasyon davranişi üzerindeki etkisi
SEREN ÖZER
Doktora
İngilizce
2026
Metalurji MühendisliğiOrta Doğu Teknik ÜniversitesiMetalurji ve Malzeme Mühendisliği Ana Bilim Dalı
PROF. DR. ARCAN FEHMİ DERİCİOĞLU
PROF. DR. ZİYA ESEN
- Development and validation of an integrated thermomechanical process simulation framework for laser beam powder bed fusion additive manufacturing
Lazer ışınlı toz yataklı füzyon eklemeli imalatı için entegre bir termo-mekanik proses sımülasyon süreçlerinin geliştirilmesi ve doğrulanması
SINA KHALILVANDI BEHROUZYAR
Doktora
İngilizce
2025
Makine MühendisliğiSabancı ÜniversitesiÜretim Mühendisliği Ana Bilim Dalı
PROF. DR. BAHATTİN KOÇ