• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 2
  • Tagged with
  • 2
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Examination of Ancient Scandinavian Archaeological Findings : From Tortuna in Västerås, Sweden

Blinke, Jacob, Geiger, Evelynne, Edlund, Amanda January 2018 (has links)
This study concerns the examinations of archaeological steel-objects from the Iron Ages, found in Tortuna outside Västerås, Sweden. Not many metallurgical analyses have been made on steel objects from the Iron Ages, most likely in order to preserve the findings. Therefore, very little knowledge about old steel materials exists.The main goal of this study was to investigate how steel-made items from the Iron Ages were created, what they have been used for, and determine what kind of metallurgical knowledge the blacksmiths of the Iron Ages had. The experiments were conducted with light optical microscopy in order to investigate the morphology of the materials and with Vickers hardness test, to investigate the hardness of the materials. The investigation gave varying results for the different iron-made objects. All of the objects have been forged in some way. Most of the objects, were made of heterogeneous low carbon steel with a mainly ferritic structure. Some items also showed a martensitic structure with a ferritic core, which concludes that the smiths probably knew how to quench and temper steel. Due to heavy corrosion on many ofthe items, further investigation is needed to strengthen the conclusions made in this report. / Denna studie behandlar undersökningar av arkeologiska stålobjekt från järnåldern,hittade i Tortuna utanför Västerås, Sverige. Det har inte gjorts många metallurgiska analyser på stålobjekt från järnåldern, troligen för att bevara föremålen. Därför finnsdet lite kunskap om gamla stålmaterial. Huvudsyftet med denna studie var att undersöka hur föremål i stål från järnåldern tillverkades, vad de har använts för och bestämma vilken typ av metallurgisk kunskap dåtiens smed besatt. Experimenten utfördes med hjälp av ljus optisk mikroskop för att undersöka materialets morfologi och med hjälp av Vickers hårdhetsprov för att undersöka materialens hårdhet. Undersökningen gav olika resultat för föremålen. Alla föremål är smidda på något sätt. De flesta föremålen bestod av heterogent kolstål med huvudsakligen ferritisk struktur. Vissa föremål visade också en martensitisk struktur med en ferritisk kärna,vilket visar på att smeden troligen visste hur man härdar och anlöper stål. På grund av stor korrosion på många av föremålen krävs ytterligare analyser för att stärka slutsatserna i denna rapport.
2

To Make Iron of Iron : A Comprehensive Analytical Study of Spade Shaped Iron Bars

Pappas Adlreburg, Nickolas January 2017 (has links)
This thesis aims to provide adequate analytical information on the spade shaped iron bars of Norrland and central Sweden. While their significance has been thoroughly debated for decades, analytical research on them has been confined to cases of single artefacts or theoretical interpretations of their value, meaning and origin. In this study a comprehensive approach is taken into consideration. Based on X-Ray fluorescence (XRF), scanning electron microscopy (SEM) and metallographical analysis this thesis seeks to facilitate new interpretations on quality, production centres and usage based on analytical results. Aiming to settle some of the long lasting questions regarding the artefacts while producing results which can further the discussion by raising new questions, previously unasked.

Page generated in 0.0386 seconds