Journal ArticleDOI
The solidification sequence in an 18-8 stainless steel, investigated by directional solidification
Reads0
Chats0
TLDR
In this paper, the authors applied the directional solidification technique to investigate the complicated solidification sequence in a commercial austenitic stainless steel which was known to yield a primary precipitation of § ferrite when cast into a 5 tons ingot.Abstract:
The directional solidification technique was applied in order to investigate the complicated solidification sequence in a commercial austenitic stainless steel which was known to yield a primary precipitation of § ferrite when cast into a 5 tons ingot. Three stages of solidification were found. The first precipitation of § ferrite was interrupted by precipitation of austenite and at the end of the solidification there was a transition back to precipitation of § ferrite. The competition between the first two stages is affected by the cooling rate and the nitrogen content. The precipitation of austenite from the melt results in the usual coring whereas o ferrite forms with a very homogeneous composition, presumably due to rapid diffusion in this phase. On cooling austenite forms from the § ferrite and this reaction also results in coring, presumably due to rapid diffusion in § ferrite.read more
Citations
More filters
Journal ArticleDOI
Solidification behavior in three-phase region of AISI 304 stainless steel
Jipeng Fu,Yuqi Yang +1 more
TL;DR: In this paper, phase transformation details in the three-phase region of AISI 304 stainless steel were revealed by quenching, and the phase transformation pattern was confirmed by consideration of the difference in Gibbs free energy.
Journal ArticleDOI
Formation of two-phase coupled microstructure in AISI 304 stainless steel during directional solidification
TL;DR: In this article, the formation and evolution details of a two-phase coupled microstructure in AISI 304 stainless steel are studied by quenching method during directional solidification.
Journal ArticleDOI
Inoculating Stainless Steel with Titanium Nitride
TL;DR: In this paper, the effectiveness of TiN as an inoculant for ferritic, austenitic, and ferrite/austenite stainless steel bars, solidified slowly and directionally, is examined.
Journal ArticleDOI
Methodology for Estimating Thermal and Neutron Embrittlement of Cast Austenitic Stainless Steels During Service in Light Water Reactors
Omesh K. Chopra,A. S. Rao +1 more
TL;DR: In this paper, the effect of thermal aging on the degradation of fracture toughness and Charpy-impact properties of austenitic stainless steel (SS) welds has been characterized at reactor temperatures.
Journal ArticleDOI
The determination of heat treatment parameters of X52 microalloyed steel after high frequency induction welding
M. Çöl,Muharrem Yılmaz +1 more
TL;DR: In this paper, a simulation furnace was designed and assembled for this purpose and all the possible time temperature sequence was exercised with a small set of samples before the production was associated to the heat treatment applications and the test results were discussed with respect to metallurgical and micro-structural changing in the materials and the simulation simulations of the induction-welded pipes that are produced in pipe mills Mannesmann Sumerbank in Izmit, Turkey were accomplished.
Related Papers (5)
Ferritic-austenitic solidification mode in austenitic stainless steel welds
N. Suutala,T. Takalo,T. Moisio +2 more
The relationship between solidification and microstructure in austenitic and austenitic-ferritic stainless steel welds
N. Suutala,T. Takalo,T. Moisio +2 more