Effect of Different Tempering Stages and Temperatures on Microstructure, Tenacity and Hardness of Vacuum Sintered HSS AISI T15 |
| Journal |
Materials Science Forum (Volumes 591 - 593) |
| Volume |
Advanced Powder Technology VI |
| Edited by |
Lucio Salgado and Francisco Ambrozio Filho |
| Pages |
68-73 |
| DOI |
10.4028/www.scientific.net/MSF.591-593.68 |
| Online since |
August, 2008 |
| Authors |
E.P.R. Lima,
Maurício D. M. das Neves,
Rejane A. Nogueira,
L.G.C. de Oliveira,
Francisco Ambrozio Filho
|
| Keywords |
AISI T15, Heat Treatment, High Speed Steel, Powder Metallurgy |
| Abstract |
The purpose of this study is to evaluate the effect of the stages and tempering
temperatures in the microstructure, tenacity and hardness of the vacuum sintered high speed steel
AISI T15. The material was uniaxial pressing at 700 MPa and sintered in a vacuum furnace at
1275ºC. After that, different samples of the materials were submitted to the annealing treatment at
870ºC, quenching at 1235ºC and tempering (single, double and triple) at 540, 550 and 560ºC.
Concluded the treatments, Rockwell C measurements of hardness were accomplished and, to
evaluate the toughness of the material, TRS (Transverse Rupture Strength) tests were done. Later
on, the materials were submitted to the metallographic preparation for microstructure analysis in
optical microscopy, SEM, EDX and X-ray diffraction. Finally, each property analyzed was
evaluated and correlated with the different tempering stages and temperatures accomplished. |
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