Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Metallurgical Analysis of Viking Age Amulet Rings: and Comparison With Cutting Tools
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
2017 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Artefacts known as amulet rings, a kind of Viking age jewellery, have often been encountered during archaeological excavations of Viking Age sites. The rings do not appear to have any practical use, but are rather considered to be of cultural or religious importance. Their exact function is however unclear, as are the details regarding the production and material choices for the rings.This study mainly examines the microstructure of samples from Viking Age amulet rings found in Dalecarlia, Sweden. To be able to conclude how much effort that was put into the rings a comparison with medieval cutting tools was conducted. Thus, the knives were made with more care in order to obtain the material properties required to give the knives the sharpness and hardness they need to function. The analysis shows that the amulet rings were made from heterogeneous low-carbon steel, indicating little or no welding and a poor-quality starting material. Were as the microstructure of the knives had homogeneous microstructures often involving perlite, showing decent carbon content.Thus, it appears that the Viking Age smiths forged the amulet rings without putting too much effort into the process.This study also involved the manufacturing of a new knife from low-carbon steel, this was done to see if it was possible to redeem carbon into the surface while forging. This however, was difficult when not having todays technical equipment at hand, thus the result was insufficient.

Abstract [en]

Historiska föremål, kallade amulett ringar vilket är ett slags vikingatida smycken, har hittats vid arkeologiska utgrävningar av vikingatida boplatser. Man har inte hittat något praktiskt användningsområde för ringarna, utan de tros vara av kulturell eller religiös betydelse. Deras funktion är dock oklar, likaså detaljerna angående tillverkningen och materialvalet för ringarna.Denna studie undersöker mikrostrukturen av amulett ringar från Dalarna i Sverige. För att kunna dra slutsatser om hur mycket arbete som lades på ringarna genomförs en jämförelse med medeltida eggverktyg. Eftersom eggverktyg gjordes med omsorg för att få rätt materialegenskaper för att vara vassa och hårda kan man jämföra dessa med ringarna. Analyserna visade att amulett ringarna var gjorda av lågkolhaltigt heterogent stål som indikerar enbart lite eller ingen vällning och ett dåligt utgångsmaterial. Tillskillnad från eggverktygen som uppvisade en homogen mikrostruktur som ofta innehöll perlit vilket tyder på relativt hög kolhalt. Följaktligen framstår det som att vikingatida smeder inte la ned särskilt mycket tid i smidesprocessen vid tillverkningen av amulett ringar.Denna studie innefattar också smidet av en ny kniv från ett lågkolhaltigt stål för att se om det är möjligt att lösa in kol i ytan genom smidet. Detta var dock svårt att göra utan dagens tekniska utrustning vilket gjorde att resultatet inte visade någon uppkolning.

Place, publisher, year, edition, pages
2017. , p. 40
Keywords [en]
Amulet rings, morphology, forging
Keywords [sv]
Amulett ringar, morfologi, smide
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-209778OAI: oai:DiVA.org:kth-209778DiVA, id: diva2:1114392
External cooperation
Stockholms Universitet, Sebastian Wärmländer
Subject / course
Materials and Process Design
Educational program
Master of Science in Engineering - Materials Design and Engineering
Presentation
2017-05-15, Jernkontoret, Kungsträdgårdsgatan 10, STOCKHOLM, 14:15 (English)
Supervisors
Examiners
Available from: 2017-06-28 Created: 2017-06-22 Last updated: 2017-06-28Bibliographically approved

Open Access in DiVA

Metallurgical Analysis of Viking Age Amulet Rings(10805 kB)256 downloads
File information
File name FULLTEXT01.pdfFile size 10805 kBChecksum SHA-512
f567a59733d958b97ca77572988bf42ec936165fe6d861a2d55ab24939d3b0f4548b896640ca4e34032a5c8e9d8f88b4cca9c251bf59b961d52ae5362fe65c6a
Type fulltextMimetype application/pdf

By organisation
Materials Science and Engineering
Metallurgy and Metallic Materials

Search outside of DiVA

GoogleGoogle Scholar
Total: 256 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 265 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf