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Accession number: 20132416414683 Title: Research on powder metallurgy high nitrogen stainless steels Authors: Cui, Da Wei1 ; Wang, Jin Long1 Author affiliation: 1 Department of machinery, Weifang University, Weifang 261061, China Source title: Advanced Materials Research Abbreviated source title: Adv. Mater. Res. Volume: 690 693 Monograph title: Materials Design, Processing and Applications Issue date: 2013 Publication year: 2013 Pages: 172-175 Language: English ISSN: 10226680 ISBN-13: 9783037856925 Document type: Conference article (CA) Conference name: 4th International Conference on Manufacturing Science and Engineering, ICMSE 2013 Conference date: March 30, 2013 - March 31, 2013 Conference location: Dalian, China Conference code: 97228 Sponsor: Northeastern University, China; Harbin Institute of Technology; Jilin University Publisher: Trans Tech Publications Ltd, Kreuzstrasse 10, Zurich-Durnten, CH-8635, Switzerland Abstract: High nitrogen Fe-18Cr-12Mn-3Mo-xN austenitic stainless steels were prepared by mechanical alloying and powder metallurgical pressing-sintering techniques. The microstructures, nitrogen contents and sintering properties of the milled powders and sintered bodies had been also investigated. The results show that high nitrogen and nearly spherical composite powders with good compressibility can be obtained by high-energy vibration ball milling and high temperature nitriding. It is also found that the sintering temperature has a significant effect on the density and the nitrogen content of sintered specimens, and the optimal sintering temperature are determined to be 1250¡ãC, at which a favorable combination of the relative density as high as 97.1% and the final nitrogen content of 0.79wt% in sintered specimens can be obtained. The sintered bodies mainly consist of ¦Ã-austenite, ¦Á-ferrite and the lamellar Cr2N phase. After solution-annealing at 1150¡ãC for 1.5h followed by water-quenching, high nitrogen austenitic stainless steels reveal a fully austenitic structure. © (2013) Trans Tech Publications, Switzerland. Number of references: 7 Main heading: Sintering Controlled terms: Austenitic stainless steel - Ball milling - Mechanical alloying - Nitrogen - Powder metallurgy - Powders Uncontrolled terms: Austenitic structure - High nitrogen stainless steel - High-energy vibration - High-nitrogen - High-nitrogen austenitic stainless steels - Powder metallurgical - Sintering properties - Sintering temperatures Classification code: 531 Metallurgy and Metallography - 533.1 Ore Treatment - 536 Powder Metallurgy - 536.1 Powder Metallurgy Operations - 545.3 Steel - 804 Chemical Products Generally DOI: 10.4028/www.scientific.net/AMR.690-693.172 Database: Compendex Compilation and indexing terms, © 2013 Elsevier Inc. |
7Â¥2013-06-22 19:07:28
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