NDLI: Effect of dispersed Al$_{3}$Sc particles on dynamic recrystallization in P/M 7000 series alloys

Content Provider	Springer Nature Link
Author	Adachi, Hiroki Yammoto, Yusuke Nakanishi, Hidetaka Aida, Tetsuo Imaoka, Manabu Kusui, Jun
Copyright Year	2009
Abstract	Al$_{3}$Sc particles are well known to be a recrystallization inhibitor in Al alloys. In this study, 0.4, 0.8 and 1.5 mass% Sc were added to 7000 series Al alloys in supersaturation by using powder metallurgy. By subjecting rapidly solidified powders of these alloys to a heat treatment at 773 K, Al$_{3}$Sc particles were precipitated in the matrix. Subsequently, hot extrusion was carried out at 773 K. During extrusion, continuous dynamic recrystallization (DRX) occurred and fine DRX grains with a diameter of 1 mm were formed. The number of DRX grains was the largest in the 1.5Sc alloy. Even though the amount of Sc added in this case was two times larger, the number of DRX grains in 0.4Sc was almost the same as that in 0.8Sc. Since continuous DRX occurs only under conditions where the grain boundary mobility is low, the number of DRX grains is strongly related to the pinning force on the initial grain boundary exerted by Al$_{3}$Sc particles. The pinning force varied with the diameter and volume fraction of Al$_{3}$Sc particles. When the pinning force was calculated from the diameter of Al$_{3}$Sc particles, which was measured by TEM, it was proven that the number of DRX grains was proportional to the calculated pinning force. Except in the case of 0.4Sc, the Al$_{3}$Sc particle diameter was twice that obtained at the maximum pinning force (d $_{ max }$). It is possible to promote continuous DRX by decreasing the Al$_{3}$Sc particle diameter in 0.8 and 1.5Sc alloys. Lowering the heating rate before heat treatment for degassing reduced the critical nucleus size for precipitation of Al$_{3}$Sc particles as well the diameter of Al$_{3}$Sc particles. Thus, the pinning force increased in 0.8Sc and 1.5Sc alloys, and the number of DRX grains also increased, as expected.
Starting Page	159
Ending Page	162
Page Count	4
File Format	PDF
ISSN	09722815
Journal	Transactions of the Indian Institute of Metals
Volume Number	62
Issue Number	2
e-ISSN	09751645
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-07-28
Publisher Place	India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	aluminium alloy Al$_{3}$Sc dynamic recrystallisation Tribology, Corrosion and Coatings Materials Science Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Effect of multiple additives (Mn and Zr) on microstructure of P/M 7000 series aluminum alloys

Microstructure and mechanical properties of ternary intermetallic compound dispersed P/M Al-Mn-X-Zr (x=Cu,Ni) alloys

TEM studies on recovery and recrystallisation in Equal Channel Angular Extrusion processed Al-3%Mg alloy

Oxidation of Aluminium Alloy Melts and Inoculation by Oxide Particles

Sources of recrystallized grains and their contributions in recrystallization of an AA3104 aluminium alloy

Microstructure and impression creep of age hardenable AA2219 aluminium alloy modified by Sc, Mg and Zr additions

Effect of Flyash Treatment on the Properties of Al-6061 Alloy Reinforced with SiC–Al$_{2}$O$_{3}$–C Mixture

Coarsening mechanisms during isothermal holding of a dendritic Al-10wt%Cu alloy

High Temperature Oxidation of the Al$_{3}$Mg$_{2}$ Complex Metallic Alloy

Effect of dispersed Al$_{3}$Sc particles on dynamic recrystallization in P/M 7000 series alloys

Similar Documents

Effect of multiple additives (Mn and Zr) on microstructure of P/M 7000 series aluminum alloys

Microstructure and mechanical properties of ternary intermetallic compound dispersed P/M Al-Mn-X-Zr (x=Cu,Ni) alloys

TEM studies on recovery and recrystallisation in Equal Channel Angular Extrusion processed Al-3%Mg alloy

Oxidation of Aluminium Alloy Melts and Inoculation by Oxide Particles

Sources of recrystallized grains and their contributions in recrystallization of an AA3104 aluminium alloy

Microstructure and impression creep of age hardenable AA2219 aluminium alloy modified by Sc, Mg and Zr additions

Effect of Flyash Treatment on the Properties of Al-6061 Alloy Reinforced with SiC–Al$_{2}$O$_{3}$–C Mixture

Coarsening mechanisms during isothermal holding of a dendritic Al-10wt%Cu alloy

High Temperature Oxidation of the Al$_{3}$Mg$_{2}$ Complex Metallic Alloy

Effect of dispersed Al$_{3}$Sc particles on dynamic recrystallization in P/M 7000 series alloys