NDLI: Fabrication of High Performance PM Nanocrystalline Bulk AA2124

Content Provider	Springer Nature Link
Author	Salem, H. G. Sadek, A. A.
Copyright Year	2009
Abstract	AA2124 nanopowders <100 nm in particle size and 20 nm internal structure produced by high energy ball milling of gas-atomized micronpowders ~45 μm in particle size and 700 nm internal structure were processed in to bulk rods. The micro- and nanopowders were hot compacted using uniaxial pressing for preliminary densification at 0.7T $_{m}$ of the alloy. Selected intact hot compacts (HCs) were promoted for warm severe plastic deformation via equal channel angular pressing (ECAP) at the minimum possible deforming temperature for final densification. Effect of the fabrication method of the consolidated powders was investigated. A combined processing via HC/ECAP produced bulk nanostructured rods 2.5 μm and 50-60 nm in grain size for the micro- and nanopowder consolidates, respectively. The powder properties controlled the degree of densification and mechanical behavior during the hot compaction stage, which influenced strongly the deformation behavior during subsequent ECAP. At the end of HC/ECAP one pass, the HC stage was responsible for about 83 and 95% of the total grain coarsening encountered for the micro- and nanopowder HCs, respectively. Throughout the various consolidation stages employed, the ball-milled (BM) nanopowder consolidates exhibited 2/3 the grain growth and displayed almost twice the hardness and compressive strength values of the gas-atomized micronpowder ones. Influence of BM and HC on the Al$_{2}$O$_{3}$ layer formed around the individual powder particles was also investigated.
Starting Page	356
Ending Page	367
Page Count	12
File Format	PDF
ISSN	10599495
Journal	Journal of Materials Engineering and Performance
Volume Number	19
Issue Number	3
e-ISSN	15441024
Language	English
Publisher	Springer US
Publisher Date	2009-07-10
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ball-milled nanopowders consolidation behavior gas-atomized micronpowders hot compaction warm ECAP Engineering Design Quality Control, Reliability, Safety and Risk Tribology, Corrosion and Coatings Materials Science Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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

Fabrication of High Performance PM Nanocrystalline Bulk AA2124

HRTEM and Nanoindentation Studies of Bulk WC Nanocrystalline Materials Prepared by Spark Plasma Sintering of Ball-Milled Powders

Reactive Ball Milling to Fabricate Nanocrystalline Titanium Nitride Powders and Their Subsequent Consolidation Using SPS

Corrosion Failures in Gas Turbine Hot Components

A Comparison Between ECAP and Conventional Extrusion for Consolidation of Aluminum Metal Matrix Composite

Soil Compaction Due to Tractor Traffic

Four approaches to improve the tensile ductility of high-strength nanocrystalline metals

Microstructure and hardness of copper powder consolidated by plasma pressure compaction

Stepwise Depletion of Coating Elements as a Result of Hot Corrosion of NiCrAlY Coatings

Fabrication of High Performance PM Nanocrystalline Bulk AA2124

Similar Documents

Fabrication of High Performance PM Nanocrystalline Bulk AA2124

HRTEM and Nanoindentation Studies of Bulk WC Nanocrystalline Materials Prepared by Spark Plasma Sintering of Ball-Milled Powders

Reactive Ball Milling to Fabricate Nanocrystalline Titanium Nitride Powders and Their Subsequent Consolidation Using SPS

Corrosion Failures in Gas Turbine Hot Components

A Comparison Between ECAP and Conventional Extrusion for Consolidation of Aluminum Metal Matrix Composite

Soil Compaction Due to Tractor Traffic

Four approaches to improve the tensile ductility of high-strength nanocrystalline metals

Microstructure and hardness of copper powder consolidated by plasma pressure compaction

Stepwise Depletion of Coating Elements as a Result of Hot Corrosion of NiCrAlY Coatings

Fabrication of High Performance PM Nanocrystalline Bulk AA2124