Search: id:"swepub:oai:DiVA.org:hv-10563" >
Effects of Austenit...
Effects of Austenitisation Temperature and Multiple Tempering on the Microstructure and Impact Toughness of a 5 wt. % Cr Cold Work Tool Steel
-
- Rehan, Arbab (author)
- Högskolan Väst,Forskningsmiljön produktionsteknik(PTW),Uddeholms AB, SE-683 85, Hagfors, Sweden,PTW
-
- Medvedeva, Anna (author)
- Uddeholms AB, SE-683 85, Hagfors, Sweden.
-
- Svensson, Lars-Erik, 1951- (author)
- Högskolan Väst,Avdelningen för svetsteknologi (SV),PTW
-
show more...
-
- Karlsson, Leif, 1952- (author)
- Högskolan Väst,Avdelningen för svetsteknologi (SV),PTW
-
show less...
-
(creator_code:org_t)
- 10th TOOL Conference, 2016
- 2016
- English.
-
In: 10th TOOL Conference, Tool, conference proceedings. - : 10th TOOL Conference. ; , s. 1-10
- Related links:
-
http://tool2016.org/...
-
show more...
-
http://tool2016.org/
-
https://hv.diva-port... (primary) (Raw object)
-
https://urn.kb.se/re...
-
show less...
Abstract
Subject headings
Close
- The microstructure and properties of a 5 wt.% Cr cold work tool steel were studied after austenitisation at 1020°C, 1050°C or 1075°C followed by single, double and triple tempering treatments at 525°C. The microstructures were investigated with scanning electron microscopy and X-ray diffraction and phase transformations were studied by dilatometry. Furthermore, hardness and Charpy un-notched and V-notched impact toughness testing was performed and results were correlated to observed microstructures. With higher austenitisation temperature, the martensite and bainite start temperatures were lowered resulting in microstructures containing a higher volume fraction of retained austenite. Retained austenite transformed into martensite on cooling from the tempering temperature. Specimens that were austenitised at 1050°C or 1075°C and tempered twice contained fresh martensite. Applying a third tempering was therefore required to guarantee a fully tempered microstructure. The second tempering resulted in an increase of the un-notched impact energy while the third tempering did not have a pronounced effect. A triple tempering procedure could be preferable when austenitising at high temperatures to avoid undesirable fresh martensite in the tool microstructure.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Keyword
- Cold work tool steel
- microstructure
- martensite
- retained austenite
- toughness
- X-ray diffraction
- scanning electron microscopy
- dilatometry
- Production Technology
- Produktionsteknik
- Manufacturing and materials engineering
- Produktions- och materialteknik
Publication and Content Type
- vet (subject category)
- kon (subject category)
To the university's database