Influence of sinter-cooling rate on the mechanical properties of powder metallurgy austenitic, ferritic, and duplex stainless steels sintered in vacuum

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:642

Article

Martin, F.¹  Garcia, C.¹  Blanco, Y.¹  Rodriguez-Mendez, M. L.² 

[1] Univ Valladolid, Mat Engn, EII, E-47011 Valladolid, Spain

[2] Univ Valladolid, Dept Inorgan Chem, EII, E-47011 Valladolid, Spain

关键词: Mechanical characterization;    Hardness measurement;    Steel;    Powder metallurgy;    Hardening;   

DOI  :  10.1016/j.msea.2015.06.097

来源: Elsevier

【 摘 要 】

Austenitic, ferritic and duplex stainless steels obtained through powder metallurgy technology were sintered in vacuum. Powders were compacted at 650 or 750 MPa and sintered in vacuum with two sinter-cooling rates (furnace- and water-cooling). Mechanical properties, using tensile testing and hardness measurements were evaluated. A full microstructural study of the three types of stainless steels was performed. The mechanical behavior was a function of the sinter-cooling rate and the chemical composition. Duplex stainless steel showed the best mechanical behavior. The use of high compaction pressure and water-cooling process promoted the best mechanical results for all compositions. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

Free