Essays about: "hardness"

Showing result 1 - 5 of 209 essays containing the word hardness.

  1. 1. Characterization of Secondary Carbides in Low-Alloyed Martensitic Model Alloy Tool Steels

    University essay from KTH/Materialvetenskap

    Author : Jubica Jubica; [2020]
    Keywords : martensitic steel; secondary hardening; precipitation; STEM; EDS; Prisma; size distribution; martensitiskt stål; sekundärhärdning; utskiljning; STEM; EDS; PRISMA; storleksfördelning;

    Abstract : The development of tool steels for making and shaping other materials requires a better understanding of the material's properties during manufacture. These high-quality steels include many alloying elements, which give increased hardness during tempering. For producing hardened microstructures, austenite generation is essential. READ MORE

  2. 2. Thermal Stability of Titanium and Niobium Stabilized Stainless Steel

    University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Author : Oskar Darselius Berg; [2020]
    Keywords : Technology and Engineering;

    Abstract : This master thesis examined the microstructure after heat treatments in stainless steel, two conventional stainless steel (304 and 316) and two novel high temperature stainless steel. These stainless steels are for the use in high temperature heat exchangers for extended temperature range. READ MORE

  3. 3. Modified lignin as replacement of carbon black in elastomers- For the development of sustainable tyre technology : The substitution of carbon black with modified lignin- Green tyre technology

    University essay from Karlstads universitet/Avdelningen för kemiteknik

    Author : Mostafa Ahmed Ismail; [2020]
    Keywords : lignin; tyre rubber; elastomeric materials; esterfication;

    Abstract : Due to its large flexibility, low-price, large availability, and properties lignin is seen as an important compound with a wide range of applications. The increasing demand of fossil-based rubber materials is causing a serious threat to the environment and it is contributing to plastic- and marine pollution, ozone depletion and carbon dioxide emission (CO2) [1,2]. READ MORE

  4. 4. Evaluation of sensor techniques for detection of contaminants in greywater from showers

    University essay from Lunds universitet/Avdelningen för Biomedicinsk teknik

    Author : Andreas Bengtsson; Kalle Andersson; [2020]
    Keywords : Greywater; Ultrasound; IR; Impedance; Detection; Shower; Technology and Engineering;

    Abstract : This thesis has been made in collaboration with the company Orbital Systems. The aim has been to optimize their product the Orbital shower, which is a circulating shower system. The work evaluates different sensor techniques suitable for detection of contaminants in greywater. READ MORE

  5. 5. An armored truck cab design : Case study: investigation of selected steel grades

    University essay from KTH/Materialvetenskap

    Author : Filippo Pellegrini; [2020]
    Keywords : Ballistic steel; single and double layer protection; truck cab; dynamic softening; Ballistiskt stål; enkel- och dubbelskiktsskydd; konstruktion av lastbilshytt; dynamisk mjukning;

    Abstract : This study aimed at defining useful guidelines for the design of an armored truck cab. Particularly, the quality and performance of ballistic steel were defined, considering not too high demanding requirements. Two steel grades, corresponding to hardness of 500 HB and 600 HB, and three different suppliers were selected. READ MORE