Alatni čelici - podjela i osnovna svojstva

Scientific paper - Original scientific paper

• Title (english): Tool steels - classification and basic properties
• Author: Sandra Brajčinović
• Author: Anita Begić Hadžipašić
• Author: Jožef Medved
• Editor: Natalija Dolić
• Editor: Zdenka Zovko Brodarac
• Editor: Anita Begić Hadžipašić
• Author's institution: University of Zagreb; Faculty of Metallurgy
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Metallurgy

Abstract (croatian)

U ovom radu dan je pregled proučavanja metalurških procesa naprednih metalnih materijala. Termodinamičke karakteristike procesa obuhvadaju uvjete prema kojima je mogude pratiti odvijanje procesa u željenom pravcu te kinetiku odvijanja procesa. Alatni čelici pripadaju skupini naprednih metalnih materijala od kojih se zahtijevaju posebna svojstva poput visoke tvrdode i otpornosti na trošenje, postojanost čvrstode kod povišenih temperatura, dobro ponašanje pri toplinskoj obradi, korozijska otpornost i dr. Postizanje dobrih svojstava omogudeno je legiranjem kromom, volframom, vanadijem, molidbenom ili kobaltom. Veoma je bitno u kojoj mjeri se dodaju legirajudi elementi i kako teče proces proizvodnje, jer spojevi koji nastaju tijekom proizvodnje mogu se mijenjati i tako utjecati na transformacijske procese te se izlučiti u nepoželjnom obliku. Legirajudi elementi se najčešde spajaju s ugljikom u karbide, ali također mogu dijelom supstituirati u kristalnu rešetku željeza te stvarati nepoželjne intermetalne spojeve. U svrhu poboljšanja svojstava alatnih čelika, teži se pronalasku adekvatnog kemijskog sastava kako bi se omogudilo dobivanje stabilnih termodinamičkih parametara.

Abstract (english)

This paper presents an overview of metallurgical processes of advanced metallic materials. The thermodynamic characteristics of the process include the conditions under which it is possible to follow the process in the desired direction and kinetics of the process. Tool steels belong to a group of advanced metallic materials, which are required by special properties such as high hardness and wear resistance, high strength stability at elevated temperatures, good behavior during heat treatment, high corrosion resistance etc. Achieving good properties is enabled by alloying with chromium, tungsten, vanadium, molybdenum or cobalt. It is very important to what extent the alloying elements are added and how the process of production proceeds, because the compounds formed during the production can be altered, and thus affect the transformation processes, and secreted in an undesirable form. Alloying elements are most often combined with carbon in carbides but can also be partially substituted in the iron crystal lattice and create undesirable intermetallic compounds. In order to improve the properties of tool steels, the aim is to find an adequate chemical composition to enable obtaining stable thermodynamic parameters.

• Keywords (croatian): alatni čelici; metalurški procesi; termodinamika; kinetika; legirajući elementi
• Keywords (english): tool steels; metallurgical processes; thermodynamics; kinetics; alloying elements
• Language: croatian
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Publication title: Proceedings Book 17th International Foundrymen Conference Hi-tech casting solution and knowledge based engineering
• Numbering: pp. 113-124
• ISBN: 978-953-7082-31-4
• URN:NBN: urn:nbn:hr:115:193147
• Publication: 2018
• Conference: Title: 17th International Foundrymen Conference; Location: Opatija, Croatia; Start date: 2018-05-16; End date: 2018-05-18; Assembly type: Lecture
• Type of resource: Text
• Publisher: Sveučilište u Zagrebu Metalurški fakultet
• Publishing place: Sisak
• Access conditions: Open access
• Created on: 2019-04-24 06:34:29