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High Performance Steel for Percussive Drilling
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences. Uppsala university.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
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2017 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Atlas Copco Secoroc AB are searching after new bulk materials for drill heads that are used in percussive drilling in order to improve their strength and durability. The aim of this project is to assist Atlas Copco in this search and provide them with further information regarding material properties, alloying elements, suppliers, etc.

A literary study was carried out in order to identify materials that had UTS and KIC more than or equal to 1700 MPa and 70 MPa*m^1/2, respectively. Materials that fulfilled these criteria were T250 grade maraging steel, Cobalt free maraging steel, High cobalt maraging steel, 300 grade maraging steel, AerMet 100, AF1410, S53, M54, 300M, 4340M and PremoMet. These were categorized into maraging steels, high alloy secondary hardened steels, and low alloy steels, and were then further researched.

The material with the highest combination of UTS and KIC was M54 followed by AerMet 100; while AF1410 had the highest KIC but a low UTS, and PremoMet had the highest UTS but a low KIC. Maraging steels and HASH steels have a similar price range, while low alloy steels are much cheaper.

Place, publisher, year, edition, pages
2017. , p. 50
Series
UPTEC Q, ISSN 1401-5773TVE ; TVE-Q 17 001
Keywords [en]
Ultra high strength steel, ultra high strength, uhs, maraging, marageing, secondary hardened, low alloy, steel, alloy, fracture toughness, uts
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:uu:diva-323789OAI: oai:DiVA.org:uu-323789DiVA, id: diva2:1107478
Educational program
Master Programme in Materials Engineering
Supervisors
Examiners
Available from: 2017-06-15 Created: 2017-06-09 Last updated: 2017-06-15Bibliographically approved

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Metallurgy and Metallic Materials

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