Secondary Hardening of an AISI M3:2 High Speed Steel Sinter 23 Hot Isostatic Pressed

2017 ◽  
Vol 899 ◽  
pp. 361-365
Author(s):  
Oscar Olimpio de Araújo Filho ◽  
Cezar Henrique Gonzalez ◽  
Severino Leopoldino Urtiga Filho ◽  
C.A.N. Oliveira ◽  
Noelle D’emery Gomes Silva ◽  
...  
Keyword(s):  
Heat Treatment ◽  
High Speed ◽  
Hot Isostatic Pressing ◽  
High Speed Steel ◽  
Secondary Hardening ◽  
Tempering Temperature ◽  
Hardness Tests ◽  
Powder Metallurgy Process ◽  
Secondary Hardness ◽  
Metallurgy Process

The main aim of this work was to study the behavior of the secondary hardening of AISI M3:2 high speed steel named Sinter 23® produced by powder metallurgy process of hot isostatic pressing (HIP). The M3:2 high speed steel Sinter 23® was submitted to heat treatment of hardening with austenitizing temperatures of 1140 oC, 1160 oC, 1180 oC and 1200 oC and tempering at 540 oC, 560 oC and finally 580 oC. The effectiveness and response of the heat treatment was determined using hardness tests (Vickers and Rockwell C hardness) and had its property of secondary hardness evaluated. The results showed that the secondary hardening peak of Sinter 23® high speed steel (tempering temperature at which maximum hardness is attained) is at 540 °C for the lower austenitization temperatures of 1140 °C and 1160 °C, and it is at 560 °C for the higher austenitizing/quenching temperatures of 1180 °C and 1200°C.

Transverse Rupture Strength of M3:2 High Speed Steel Produced through Conventional Casting and Powder Metallurgy Techniques

2006 ◽  
Vol 514-516 ◽  
pp. 584-588
Author(s):  
Oscar O. Araujo Filho ◽  
João Franklin Liberati ◽  
Waldemar Alfredo Monteiro ◽  
Maurício David Martins das Neves ◽  
Luís Carlos Elias da Silva ◽  
...  
Keyword(s):  
Heat Treatment ◽  
High Speed ◽  
Rupture Strength ◽  
Hot Isostatic Pressing ◽  
High Speed Steel ◽  
Liquid Phase Sintering ◽  
Bending Tests ◽  
Transverse Rupture Strength ◽  
Three Point Bending ◽  
Hardness Tests

The main aim of this work is to study the influence of the heat treatment on the transverse rupture strength of three M3:2 high speed steel obtained by differents techniques. PM Sinter 23 obtained by hot isostatic pressing (HIP) of gas atomized powders, a vacuum sintered high speed steel obtained by uniaxial cold compaction and liquid phase sintering of M3:2 water atomized powders and a conventional (cast to ingot and hot work) VWM3C were submitted to hardening in order to determine the influence of this treatment on the transverse rupture strength. The two PM high speed steels and the conventional one were submitted to heat treatment of hardening with austenitizing temperatures of 1140, 1160, 1180 and 1200 °C and tempering at 540 and 560 °C. The effectiveness of the heat treatment was determined by hardness tests (Rockwell C hardness). The microstructure was evaluated by scanning eletronic microscopy (SEM). At least five samples of these three high speed steels were manufactured, austenitized, quenched and tempered as described above and fractured in three point bending tests in order to evaluate the influence of this treatment on the transverse rupture strength (TRS).

Development of Powder Metallurgy High Speed Steel

2010 ◽  
Vol 638-642 ◽  
pp. 1854-1859 ◽  
Author(s):  
Hai Lin Zhong ◽  
Y. Fang ◽  
C. Kuang ◽  
X. Kuang ◽  
Q. Hao ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
High Speed ◽  
Nonmetallic Inclusions ◽  
Hot Isostatic Pressing ◽  
High Speed Steel ◽  
Gas Atomization ◽  
Treatment Processes ◽  
Uniform Microstructure ◽  
Powder Metallurgy Process ◽  
Metallurgy Process

High speed steels (HSS) have been widely used worldwide. This paper introduced some research results of high speed steels via Powder Metallurgy process. High speed steels AHPT15 (W12Cr4V5Co5 ) were investigated via gas atomization, hot isostatic pressing, hot working and heat treatment processes. Microstructure of the steels, precipitation of carbides and the influence of nonmetallic inclusions on mechanical properties of the steels were investigated. PM HSS showed fine and uniform microstructure and exhibited excellent toughness and wear resistance, with bend strength up to 3500 MPa and hardness up to 68.0 HRC.

Grain Size of Commercial High Speed Steel

2006 ◽  
Vol 530-531 ◽  
pp. 16-21 ◽  
Author(s):  
Rejane A. Nogueira ◽  
Oscar O. Araújo Filho ◽  
Leonardo F.M. Souza ◽  
João Franklin Liberati ◽  
Lucio Salgado ◽  
...  
Keyword(s):  
Grain Size ◽  
Grain Growth ◽  
High Speed ◽  
High Speed Steel ◽  
Matrix Composition ◽  
Quenching Temperature ◽  
Austenite Grain Size ◽  
Powder Metallurgy Process ◽  
Hardening Treatment ◽  
Metallurgy Process

The heat treatment of high speed steel tools consists of austenitizing, quenching and tempering. The size of austenite grains formed during the hardening treatment is an important factor in the final microstructure of the steel, and it also affects properties such as wear resistance and toughness. This paper presents the austenite grain size, matrix composition and hardness of commercial AISI M2, AISI T15, VWM3C and Sinter 23 high speed steels that were austenitized and quenched from five distinct temperatures. This study shows that increase in quenching temperature results in grain growth of steels such as AISI M2 and VWM3C, obtained by the conventional method (cast to ingot and worked). The P/M Sinter 23 high speed steel showed a slight grain growth (about 10%). This effect was not observed in AISI T15 obtained by the powder metallurgy process.

FAGERSTA D-950

Alloy Digest ◽  
1976 ◽  
Vol 25 (9) ◽  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Chemical Analysis ◽  
Physical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
Secondary Hardening ◽  
Excellent Response ◽  
Economic Considerations

Abstract FAGERSTA D-950 is a high-speed steel that combines economic considerations in a properly balanced chemical analysis. An optimum carbon-vanadium ratio provides a high attainable hardness along with good mechanical properties. Its wide hardening range and excellent response to secondary hardening is rather unique and can offer some advantages in heat treatment. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-307. Producer or source: Fagersta Steels Inc..

Strengthening Mechanisms in High-Speed Steel as Related to Tool-Life

1979 ◽  
Vol 101 (2) ◽  
pp. 217-222 ◽  
Author(s):  
W. E. Henderer
Keyword(s):  
Yield Strength ◽  
Tool Life ◽  
High Speed ◽  
High Speed Steel ◽  
Precipitation Strengthening ◽  
Strengthening Mechanisms ◽  
Precipitation Sequence ◽  
Tempering Temperature ◽  
Life Tests ◽  
Secondary Hardness

Tool-life tests are reported which show that the performance of AISI M1 high speed steel taps responds to the tempering temperature in the same manner as the yield strength. The metallurgical transformations which occur during tempering are described in detail with specific attention given to the precipitation reactions which occur over the temperature range of peak secondary hardness. The variation in yield strength is found to be consistent with a coherent-incoherent precipitation sequence of alloy carbides during tempering. An estimate of the yield strength is made based on dislocation theories of martensitic and precipitation strengthening.

scholarly journals Comparison of properties of cutting edges made of HSS obtained by conventional methods and in powder metallurgy process

Mechanik ◽  
2017 ◽  
Vol 90 (10) ◽  
pp. 826-828
Author(s):  
Maciej Jan Kupczyk ◽  
Jędrzej Komolka
Keyword(s):  
Powder Metallurgy ◽  
Chemical Composition ◽  
Functional Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Similar Chemical Composition ◽  
Powder Metallurgy Process ◽  
Similar Chemical ◽  
Conventional Methods ◽  
Metallurgy Process

Selected fragments of investigations of technological and functional properties of cutting edges made of conventional and sintered high speed steel with similar chemical composition are presented. Investigations of technological and functional properties have comparative character and concern among other things estimation of chemical composition, hardness, structure and durability during toughening steel machining.

BÖHLER S393 MICROCLEAN

Alloy Digest ◽  
2018 ◽  
Vol 67 (7) ◽  
Keyword(s):  
Powder Metallurgy ◽  
Physical Properties ◽  
High Speed ◽  
High Performance ◽  
High Speed Steel ◽  
Heat Treating ◽  
Powder Metal ◽  
Powder Metallurgy Process ◽  
Red Hardness ◽  
Metallurgy Process

Abstract Böhler (or Boehler) S393 is a high-speed steel made by the powder metallurgy process with excellent toughness and red hardness. This datasheet provides information on composition, physical properties, and hardness. It also includes information on surface qualities as well as forming, heat treating, machining, and powder metal forms. Filing Code: TS-751. Producer or source: Voestalpine High Performance Metals Corporation.

UNS T12001

Alloy Digest ◽  
1989 ◽  
Vol 38 (1) ◽  
Keyword(s):  
Heat Treatment ◽  
Physical Properties ◽  
Tool Steel ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
General Purpose ◽  
Steel Mills

Abstract UNS T12001 is a general-purpose, tungsten, high-speed steel containing nominally 18% tungsten, 4% chromium and 1% vanadium. It is suitable for practically all high-speed applications. This steel has been the standard of the industry for many years because of its cutting ability, ease of heat treatment and minimum tendency to decarburize. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-495. Producer or source: Tool steel mills.

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