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A study of the static recrystallization behaviour of cast Alloy 825 after hot-compressions
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Materialens processteknologi. R&D, AB Sandvik Materials Technology, SE-811 81Sandviken, Sweden..ORCID-id: 0000-0003-0381-5494
R&D, AB Sandvik Materials Technology, SE-811 81Sandviken, Sweden..
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Materialens processteknologi.ORCID-id: 0000-0002-6339-4612
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Materialens processteknologi.
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2019 (Engelska)Ingår i: Journal of Physics: Conference Series, 2019, Vol. 1270Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

The static recrystallization behaviour of a columnar and equiaxed Alloy 825 material was studied on a Gleeble-3800 thermo-simulator by single-hit compression experiments. Deformation temperatures of 1000-1200 °C, a strain of up to 0.8, a strain rate of 1s-1, and relaxation times of 30, 180, and 300 s were selected as the deformation conditions to investigate the effects of the deformation parameters on the SRX behaviour. Furthermore, the influences of the initial grain structures on the SRX behaviors were studied. The microstructural evolution was studied using optical microscopy and EBSD. The EBSD measurements showed a relaxation time of 95 % for fractional recrystallization grains, 𝑡95, in both structures, was less than 30 seconds at the deformation temperatures 1100 °C and 1200 °C. However, fewer than 95% of recrystallized grains recrystallized when the deformation temperature was lowered to 1000 °C. From the grain-boundary misorientation distribution in statically recrystallized samples, the fraction of high-angle grain boundaries decreased with an increasing deformation temperature from 1000 °C to 1200 °C for a given relaxation time. This was attributed to grain coarsening

Ort, förlag, år, upplaga, sidor
2019. Vol. 1270
Serie
Journal of Physics: Conference Series, ISSN 1742-6588
Nyckelord [en]
Alloy 825, Static recrystallization, hot compression, Gleeble-3800 thermo simulator
Nationell ämneskategori
Metallurgi och metalliska material
Forskningsämne
Teknisk materialvetenskap
Identifikatorer
URN: urn:nbn:se:kth:diva-258210DOI: 10.1088/1742-6596/1270/1/012023Scopus ID: 2-s2.0-85072107757OAI: oai:DiVA.org:kth-258210DiVA, id: diva2:1349884
Konferens
7th International Conference on Recrystallization and Grain Growth, Ghent,August 4-9, 2019
Anmärkning

QC 20190916

Tillgänglig från: 2019-09-10 Skapad: 2019-09-10 Senast uppdaterad: 2019-10-28Bibliografiskt granskad

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Al-Saadi, MunirSandberg, FredrikHulme-Smith, ChristopherKarasev, AndreyJönsson, Pär

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Al-Saadi, MunirSandberg, FredrikHulme-Smith, ChristopherKarasev, AndreyJönsson, Pär
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Materialens processteknologi
Metallurgi och metalliska material

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