Essays about: "Grain Refinement"

Showing result 1 - 5 of 7 essays containing the words Grain Refinement.

1. 1. Effect of post-treatment of cemented carbide : Microstructural investigation and evaluation of mechanical properties of cemented carbide inserts for rock tool applications

   University essay from Karlstads universitet/Avdelningen för maskin- och materialteknik

   Author : Jessica Jacobs; [2021]
   Keywords : ;

   Abstract : Cemented carbides are used in rock tool applications by reason of their beneficial mechanical properties, i.e. a combination of high toughness, wear resistance and hardness. The cemented carbides commonly receive their hardness from tungsten carbides (WC) whereas cobalt (Co) is the dominating binder material. READ MORE

3. 2. Treatment of a Liquid Al-Si Alloy : Quality Control and Comparison of Two Melt Degassing Processes

   University essay from Jönköping University/JTH, Material och tillverkning

   Author : Badreddin Radwan; [2020]
   Keywords : Dissolved Hydrogen; Degassing; Porosity; Grain Refinement; Eutectic Modification; Fluidity; Metallography; Thermal Analysis.;

   Abstract : Products manufactured by aluminium casting have become very popular and already replaced many parts that were once produced by iron and steel casting. This trends upwards especially in the automotive industry as it has become extremely important to reduce vehicle weight due to environmental requirements and economical aspects. READ MORE

4. 3. Designing a Heat Treatment to Achieve Ductile Advanced High Strength Steels

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Abdellatif Laarich; [2020]
   Keywords : Heat treatment; Quenching and Partitioning; Austempering; Quenching and Tempering; High Aluminum Steel; Strenx 700MC; Ductility; Strength;

   Abstract : Heat treatment is a way to significantly change materials properties. When presented with materials that lack certain mechanical properties, it is possible to change its chemical properties and microstructures by applying heat. This can help achieve better yield strength, ductility and toughness. READ MORE

5. 4. Grain refinement of aluminium by titanium diboride particles : The importance of nucleation, growth restriction, and cooling rate

   University essay from KTH/Materialvetenskap

   Author : Sofia Carlsson; [2019]
   Keywords : ;

   Abstract : The grain refinement of aluminium by titanium diboride particles, TiB2, using Ti/B grain refiners is common practice in the aluminium industry, but exactly how this grain refinement is achieved is uncertain. Current addition of grain refiner is therefore rarely optimal and excessive addition rates of grain refiner is common. READ MORE

6. 5. Thermodynamic modelling ofmartensite start temperature in commercial steels

   University essay from KTH/Materialvetenskap

   Author : Arun Kumar Gulapura Hanumantharaju; [2018]
   Keywords : Martensite start temperature; Thermodynamic modelling; Austenite grain size; Epsilon martensite; CALPHAD;

   Abstract : Firstly, an existing thermodynamic model for the predicting of martensite start temperature of commercial steels has been improved to include more elements such as N, Si, V, Mo, Nb, W, Ti, Al, Cu, Co, B, P and S and their corresponding composition ranges for Martensitic transformation. The predicting ability of the existing model is improved considerably by critical assessment of different binary and ternary systems i. READ MORE