Essays about: "Austenite"

Showing result 16 - 20 of 34 essays containing the word Austenite.

  1. 16. 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

  3. 17. Investigation of the Effect of Different “Q&P” Parameters on the Mechanical Properties of AHSS

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

    Author : Luciano Borasi; [2018]
    Keywords : Quenching and Partitioning; AHSS; 06CV;

    Abstract : In the present study, the influence of the quenching temperature and partitioning conditions (temperature and time) have been investigated on a 0.6%C-1.2%Mn-1.6%Si-1. READ MORE

  4. 18. Deformation-Induced Martensitic Transformation and Mechanical Properties of Duplex and Austenitic Stainless Steels : A Synchrotron X-Ray Diffraction Study

    University essay from KTH/Metallografi

    Author : Sen Lin; [2017]
    Keywords : Synchrotron radiation; High energy X-ray diffraction; In situ tensile loading; TRIP steel; Martensite phase transformation;

    Abstract : Metastable austenitic and duplex stainless steels are widely used materials in industrial anddomestic applications, owing to their attractive characteristics such as good corrosion resistanceand favorable mechanical properties. Both types of steel experience enhanced mechanicalproperties during plastic deformation due to the formation of the martensite phase from theparent austenite phase, this is called deformation-induced martensitic transformation (DIMT). READ MORE

  5. 19. Alternative welding methods for nitrogen alloyed steel

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Anders Bertilsson; [2017]
    Keywords : Nitrogen alloyed tool steel; Uddeholm Vanax SuperClean; solid-state welding; direct-drive friction welding; friction stir welding; microstructure; Vickers microhardness testing; retained austenite measurement by X-ray diffraction; Kvävelegerat verktygsstål; Uddeholm Vanax SuperClean; trycksvetsning; friktionssvetsning; friktionsomrörningssvetsning; mikrostruktur; Vickers mikrohårdhetsmätning; restaustenitmätning med röntgendiffraktion;

    Abstract : This project explores the feasibility of the solid-state welding method direct-drive friction welding to be used as a joining method for the nitrogen alloyed steel Uddeholm Vanax SuperClean, produced via processes based on powder metallurgy. Vanax SuperClean cannot be welded using fusion welding methods where the base material melts, due to nitrogen escaping the material, resulting in inferior quality welds. READ MORE

  6. 20. Quenching and tempering hardness response of front axle steel beams : Different material properties during quenching and tempering

    University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Author : Simon Zemui; [2017]
    Keywords : Axle steel beams; hardness; Quenching; tempering;

    Abstract : The aim of this thesis was to investigate what the relation is between as-quench hardness and final surface hardness for steel beams is, depending on what tempering temperature is used. Also explain how chemistry, dimension and microstructure effects the final mechanical properties of the front axle beam. READ MORE