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Suresh, Aswin (author)Wire arc additive manufacturing (WAAM) can create large parts, due to its high deposition rate. WAAM can be used to create functionally graded materials (FGMs) such as a strong core of high strength low alloy (HSLA) steel and corrosion-resistant cladding of austenitic stainless (AUS) steel. However, HSLA and AUS steel are dissimilar metals with...master thesis 2024
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Zheng, Qinyi (author)Micro-indentation testing has shown great promise in extracting local mechanical properties of ductile metal materials. Although the relevant contact physics has been well revealed since the 19th century, interpreting the indentation data still poses many challenges at the application level. Regarding one of the mainstream methodologies for...master thesis 2024
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Chatzopoulou, Chrysoula (author)Shape Memory Alloys (SMAs) are a class of metallic multi-functional materials which possess sensing and actuation capabilities, thanks to their unique ability to couple thermal and mechanical fields. NiTi-based Shape Memory Alloys exhibit properties which guarantee their high performance in adverse environments and, with the added benefit of two...master thesis 2023
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Houtkoop, Mariëtte (author)This research aimed to optimize the process parameters of small copper parts printed with binder jetting. The optimisation was distinguished by dividing the parameters in print and post-process parameters. Binder jetting is an additive manufacturing technique that combines layers of the material in powder form with a binder. After the printing...master thesis 2023
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Mohan, Adithya Keshav (author)Ceramics are being explored as an alternative material by ASML to replace their stainless steel 316L (SS316L) reticle masking blades. Ceramics offer distinct advantages over stainless steel in the semiconductor industry. While stainless steel exhibits good mechanical strength, ceramics excel in electrical insulation and thermal conductivity,...master thesis 2023
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TRIGO GALLEGO, ELENA (author)To mitigate global warming, society must reduce greenhouse gas emissions. The transportation sector is one of the largest energy consumers and greenhouse gas emitters. One way to mitigate the emissions of this sector is to reduce the weight of vehicles using Advanced High Strength Steels (AHSS), particularly dual phase steels (DP). However,...master thesis 2023
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Perez Bustos, Kevork (author)Additive manufacturing (AM) refers to a series of techniques in which parts are created by successive deposition of layers. Among the different technologies, Wire Arc Additive Manufacturing (WAAM) employs a welding system in combination with a motion mechanism to deposit layers of molten metal. This technology possesses high deposition rates and...master thesis 2023
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Barazar Garcia, Eider (author)The corrosion of bearing steel often leads to accelerated damage and loss of properties that condition their service life. This damage is further exacerbated with the absorption of hydrogen into the material, generated from corrosion reactions happening at the surface. A remanufacturing process is proposed to recover the operating capabilities...master thesis 2023
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van Boekel, Mark (author)High Manganese Austenitic Steel (HMnAS) is a novel steel exhibiting excellent mechanical properties at arctic temperatures. Defense Material Organisation (DMO) is interested in the feasibility of using HMnAS in their navy's ships alongside EH36 high-strength shipbuilding steel, using 307PF stainless steel weld filler metal.<br/>The feasibility...master thesis 2023
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DASOPOULOS, DIONYSIOS (author)Thick-section high strength steels (HSS) are widely used in engineering applications with requirements of high toughness and strength. Structural components are commonly joined by welding, known to significantly degrade the mechanical properties of steel due to changes in microstructure (e.g., grain size coarsening and martensite-austenite (M-A)...master thesis 2023
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Ling, Gianni (author)Austenitic stainless steels are used in waste gate systems of turbochargers for their good mechanical strength at elevated temperatures. A key component of the waste gate system is the bushing, which guides and supports a rotating shaft under dynamic conditions. In these operating conditions, wear occurs which limits the service life of a...master thesis 2023
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Mohandas, Naveen (author)Laser powder bed fusion (L-PBF) is an additive manufacturing (AM) technology that has been gaining a lot of interest as it allows to produce parts with complex geometries and eliminate expensive tooling. Unlike the conventional manufacturing processes where material is removed to make the final component; AM part is manufactured layer-wise as...master thesis 2022
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Faucon, Lorenzo (author)Hydrogen as an alternative energy source has risen in popularity due to increased environmental awareness. Existing natural gas infrastructure is considered as a means to transport hydrogen, due to practicality and financial aspects. However, hydrogen can deteriorate the fatigue behaviour and thus induce premature failure. Since fatigue is a...master thesis 2022
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Chellu, Sreyas (author)<br/>Additive manufacturing (AM) is quickly becoming one of the more popular methods to manufacture components made of Ti-6Al-4V in the aerospace and automobile industry due to its flexibility in producing complex geometries and reducing tooling costs. As the world of additive manufacturing is still relatively young, there is no globally...master thesis 2022
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Spreij, Marlee (author)Refractories are widely used as lining material in the steelmaking industry. This class of materials is known for its superior creep resistance. However, creep of refractory linings is a known phenomenon in refractory science. Therefore, knowledge on creep behaviour is critical for furnace lining life predictions and selection of materials. This...master thesis 2022
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Cheekati, Vishnu (author)In recent decades, high strength steels in thick sections have been increasingly used in offshore structures where they are subjected to harsh service conditions such as freezing temperatures and high static/dynamic loading. At these conditions they are susceptible to a transition from ductile failure to a dangerous brittle (cleavage)...master thesis 2022
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Smedes, Michiel (author)In our modern world, where computers, mobile phones and many other applications have become indispensable, there is a growing need for high precision machines in order to be able to produce these technologies. For these complex high precision applications it is important to understand the fatigue properties of the materials used to prevent...master thesis 2022
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Terol Sanchez, María (author)This study addresses the effects of additive manufacturing (AM) parameters and post-processing heat treatments on the microstructure and fracture toughness behavior of functionally graded and non-graded Inconel 718. Laser powers of 250W and 950W were used to fabricate non-graded and graded specimens. To study the effects of the microstructural...master thesis 2022
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Zhu, WEIJIA (author)Nitinol shape memory alloys (SMAs) have a unique combination of shape memory capability, making it an attractive material for various engineering and biomedical applications. Additive manufacturing (AM) by laser powder bed fusion (L-PBF) allows to produce Nitinol net shape parts, which broadens its applications. Due to the high heating and...master thesis 2021
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Halilović, Haris (author)Carbon dioxide emissions from the transportation sector account for roughly one-third of world-wide CO2 emissions. Governmental pressure to tackle this problem has forced the industry to adapt with regard to material development. One such adaption is the development and application of advanced high-strength steels (AHSS), offering high specific...master thesis 2021
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