Heat treatment effect on structure and properties of 16GNMA steel
Description
The effect of heating for hot deformation test and of subsequent tempering on the structure, strength and ductility properties of the 16 GNMA sttel used for fabricating pressure vessels has been investigated. It has been found that in the 850-1200 deg C temperature range abrupt umps in the grain growth at 1050 and 1200 deg C occur. In case of tempering in the 500-630 deg C range the yield strength increases while the ultimate resistance to fracture decreases. At 700 deg C the ductility and toughness drop while the fracture becomes totally crystalline. The 16 GNMA steel structure following normalizing and tempering presents a mixture of ferrite and granular bainite. Steel aging at the operation temperature (450 deg C) leads to its strengthening without embrittlement
Additional details
Additional titles
- Original title (Russian)
- Влияние термической обработки на структуру и свойства стали 16GNMA
Publishing Information
- Journal Title
- Ehnergomashinostroenie
- Journal Issue
- no.5
- Series
- Ehnergomashinostroenie.
- ISSN
- 0131-1336
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- USSR
- INIS RN
- 16037746
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- AGING; DUCTILITY; GRAIN SIZE; HEAT TREATMENTS; HIGH TEMPERATURE; LOW ALLOY STEELS; PRESSURE VESSELS; TEMPERATURE DEPENDENCE; TIME DEPENDENCE; ULTIMATE STRENGTH
- Descriptors DEC
- ALLOYS; CARBON ADDITIONS; CONTAINERS; CRYSTAL STRUCTURE; IRON ALLOYS; IRON BASE ALLOYS; MECHANICAL PROPERTIES; MICROSTRUCTURE; SIZE; STEELS; TENSILE PROPERTIES