scholarly journals Behavior of liquid phase sintering of high speed steel powder compacts.

1986 ◽  
Vol 33 (8) ◽  
pp. 398-401 ◽  
Author(s):  
Shigeaki Takaji ◽  
Minoru Nitta ◽  
Masaki Kawano
Keyword(s):  
Liquid Phase ◽  
High Speed ◽  
High Speed Steel ◽  
Steel Powder ◽  
Liquid Phase Sintering ◽  
Powder Compacts

Mechanism of Liquid Phase Sintering in Fe-Cu, Cu-Ag and High Speed Steel

1988 ◽  
pp. 465-470 ◽  
Author(s):  
Shigeaki Takajo ◽  
Masaki Kawano ◽  
Minoru Nitta ◽  
Wolfgang A. Kaysser ◽  
Günter Petzow
Keyword(s):  
Liquid Phase ◽  
High Speed ◽  
High Speed Steel ◽  
Liquid Phase Sintering

scholarly journals Carbon Control of Sintered SKH51 High Speed Steel Powder Compacts.

1999 ◽  
Vol 46 (11) ◽  
pp. 1185-1189
Author(s):  
Tomita Masakazu ◽  
Ohhara Masaki ◽  
Sugiyama Daigo
Keyword(s):  
High Speed ◽  
High Speed Steel ◽  
Steel Powder ◽  
Powder Compacts ◽  
Carbon Control

Supersolidus Sintering and Mechanical Properties of Water–Atomised M3/2 High–Speed Steel Powder Sintered Under Nitrogen–Based Atmosphere

2012 ◽  
Author(s):  
Mohd. Asri Selamat ◽  
Mazlan Mohamad
Keyword(s):  
Mechanical Properties ◽  
High Speed ◽  
Low Cost ◽  
High Speed Steel ◽  
Steel Powder ◽  
Liquid Phase Sintering ◽  
Full Density ◽  
Processing Cost ◽  
Vacuum Atmosphere ◽  
Near Net Shape

Keupayaan untuk menghasilkan keluli laju–tinggi kepada bentuk hampir sebenar menggunakan relau tali–sawat berterusan menawarkan peluang untuk mempertingkatkan sifat–sifat serta mengurangkan kos pemprosesan bahan keluli ini. Sehingga kini, masalah yang timbul bagi mencapai matlamat tersebut adalah keperluan menggunakan suhu persinteran tinggi (1250–1350°C) di dalam atmosfera vakum. Satu kaedah persinteran yang murah terhadap serbuk keluli laju–tinggi pengabusan–air telah dibangunkan menerusi projek ini menggunakan mekanisme Persinteran Fasa Pepejalan–lampau Cecair (PFPC). Serbuk M3/2 keluli laju–tinggi ini boleh tersinter kepada ketumpatan penuh (>95% daripada ketumpatan teori) di dalam atmosfera berasaskan–nitrogen pada suhu persinteran 1150°C. Mikrostruktur dan sifat–sifat mekanik yang baik telah berjaya dihasilkan selepas proses rawatan haba yang sesuai dilakukan. Kata kunci: Pepejalan-lampau, serbuk pengabusan-air, atmosfera berasaskan-nitrogen The ability to produce near net shape high–speed steels using a continuous belt furnace offers the opportunity to improve the properties and reduce the processing cost of these materials. So far, the difficulty in making this advancement has been the requirement of high sintering temperatures (1250–1350°C) in vacuum atmosphere. A low cost–sintering route of water–atomised high–speed steel powder has been developed during this project using Supersolidus Liquid Phase Sintering (SLPS) mechanism. This water–atomised M3/2 high–speed steel powder can be sintered to full density (>95% of theoretical density) under nitrogen–based atmosphere at sintering temperature of 1150°C. Acceptable microstructures and mechanical properties have been obtained after appropriate heat treatment. Key words: Supersolidus, water-atomised powder, nitrogen-based atmosphere

Sintering of AISI M3:2 High Speed Steel – Part II

2006 ◽  
Vol 530-531 ◽  
pp. 358-363 ◽  
Author(s):  
Oscar O. Araujo Filho ◽  
Maurício David Martins das Neves ◽  
João Franklin Liberati ◽  
Luís Carlos Elias da Silva ◽  
Lucio Salgado ◽  
...  
Keyword(s):  
Liquid Phase ◽  
High Speed ◽  
Sintering Temperature ◽  
Hot Isostatic Pressing ◽  
High Speed Steel ◽  
Steel Part ◽  
Liquid Phase Sintering ◽  
Processing Route ◽  
Tool Steels ◽  
Different Temperatures

Liquid phase sintering of high speed steels seems to be a cheaper processing route in the manufacturing of tool steels if compared to the well-known and expansive hot isostatic pressing high speed steels process. In a previous work a M3:2 high speed steel was vacuum sintered from irregular water atomized powders and had its sintering temperature determined. In this work the same powder was uniaxially cold compacted and vacuum sintered by adding some small quantity of graphite (0.3%C in weight) to prevent porosity and loss of carbon which result from the sintering cycle. The samples from all these experimental procedures were uniaxially cold compacted and vacuum sintered at five different temperatures and had its densities evaluated. The microstructure was evaluated using optical-electronic techniques in order to investigate the best range of sintering temperature. At least five parallel samples were tested to each condition of sintering.

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