Back to Search
Start Over
Influence of surface nanocrystallization pretreatment on high-temperature vacuum carburizing behavior
- Source :
- Journal of Materials Processing Technology. 278:116519
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- The supersonic fine particles bombarding (SFPB) pretreatment is adopted to assist vacuum carburizing for refining the microstructure and improving the mechanical properties of carburized layer. The microstructures, micrhardness and tribology properties of SFPB carburized sample and vacuum carburized sample were studied. The results showed that SFPB pretreatment could form random oriented, ultrafine-grained microstructure and high density dislocations in AISI 9310 steel, leading to the increase of case depth of carburized layer, the refinement of grain size and the promotion of the formation of twin martensite and carbides in carburized layer. Besides, the surface microhardness, maximum residual compressive stress and wear rate of carburized layer were enhanced by SFPB pretreatment, which was attributed to the formation of twin martensite, grain refinement, dispersion strengthening of carbides and the increase of high misorientation angle grain boundary.
- Subjects :
- 0209 industrial biotechnology
Materials science
Misorientation
Metallurgy
Metals and Alloys
02 engineering and technology
Tribology
Microstructure
Indentation hardness
Industrial and Manufacturing Engineering
Grain size
Computer Science Applications
Carburizing
020303 mechanical engineering & transports
020901 industrial engineering & automation
0203 mechanical engineering
Modeling and Simulation
Martensite
Ceramics and Composites
Grain boundary
Subjects
Details
- ISSN :
- 09240136
- Volume :
- 278
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Processing Technology
- Accession number :
- edsair.doi...........57ad404f729cb525ace802297876f94e