Influence of heat treatment on microstructure and properties of GX12CrMoVNbN9-1 cast steel
Journal Title: Archiwum Odlewnictwa - Year 2010, Vol 10, Issue 3
Abstract
The paper presents results of research on the influence of multistage heat treatment on microstructure and properties of high-chromium martensitic GX12CrMoVNbN9 – 1 (GP91) steel. The material under investigation were samples taken out from a test coupon. Heat treatment of GP91 cast steel was performed at the parameters of temperature and time typical of treatment for multi-ton steel casts. The research has proved that in the as-received condition (as-cast state) GP91 cast steel was characterized by a coarse grain, martensitic microstructure which provided the required standard mechanical properties. The heat treatment of GP91 cast steel contributed to obtainment of a fine grain microstructure of high tempered martensite with numerous precipitations of carbides of diverse size. The GP91 cast steel structure received through heat treatment made it possible to obtain high plastic properties, particularly impact strength, maintaining strength properties on the level of the required minimum.
Authors and Affiliations
G. Golański
Keywords
Related Articles
- EP ID EP72142
- DOI -
- Views 104
- Downloads 0
Effect of thickness of refractory coating on the Lost Foam Process
The analysis of the influence of the thickness of refractory coating on the production process of casts in the Lost Foam process was introduced in the work. It was conducted in the peculiarity the analysis simulating inv...
TDA method application to austenite transformation in nodular cast iron with carbides assessment
In this paper the possibility of TDA method using to austenite transformation in nodular cast iron with carbides assessment is presented. Studies were conducted on cast iron with about 2% molybdenum and 0,70% to 4,50% ni...
Three-dimensional numerical model of solidification with motion of the liquid phase
The paper presents numerical modeling of solidification process with convective motion of the liquid phase, generated both in the liquid and mushy zones. The transition region between the areas filled with liquid and sol...
Sigma phase in the cast alloy based on the FeB3BAl intermetallic phase
The paper presents study results for cast alloy based on the FeB3BAl intermetallic phase. The study material was Fe-28Al-5Cr-1Mo-0,1Zr- 0,005B% at. alloy in the cast state. The microscopic research, phase analysis with X...
Fatigue strength of MAR-M509 alloy with structure refined by rapid crystallization
This study presents test results of high-cycle (N>2⋅107) fatigue bending strength of MAR-M-509 cobalt alloy samples, as cast and after surface refining with a concentrated stream of heat. Tests were conducted on samples...