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Title: Vanadium and niobium high strength low alloy steels for light gauge high strength strip
Author: Wynn, C. L.
Awarding Body: University of Wales Swansea
Current Institution: Swansea University
Date of Award: 2006
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This thesis details the research work undertaken during the course of study for the Engineering Doctorate degree. The work is in the form of project which aims to develop knowledge about the rolling characteristics and properties of high strength low alloy (HSLA) steels with both singular and dual additions of niobium and vanadium. This aim has been achieved through extensive laboratory hot rolling studies of a range of steel compositions, mechanical testing and metallographic examination as well as detailed analysis of data recorded during the laboratory hot rolling process to determine mean flow stresses during the laboratory hot rolling process. The results highlight the occurrence of a temperature of non recrystallisation in the niobium grades and determine the necessary levels of vanadium required to obtain comparable properties to niobium based HSLA steels. Vanadium based HSLA steels could be used to slightly extent the gauge width matrix compared to existing niobium based HSLA steels. For higher strength products the effects of dual additions of niobium and vanadium at high, medium and low levels are observed and taking the properties, processability and cost into account suggested optimum combinations are highlighted.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Eng.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available