Journal ArticleDOI
Austenitic solidification mode in austenitic stainless steel welds
T. Takalo,N. Suutala,T. Moisio +2 more
Reads0
Chats0
TLDR
In this article, the micro-and macrostructures of about 50 different stainless welds of the AISI/AWS 300 series were analyzed and the results indicated that in welding condition corresponding to a typical SMA welding those and only those welds in which the ratio Creq/Nieq≲1.48, where Nieq and Creq are the nickel and chromium equivalents on the Schaeffler diagram, solidify with the austenite as the primary or leading phase and the delta ferrite, if any, formed from the rest melt betweenAbstract:
The micro- and macrostructures of about 50 different stainless welds of the AISI/AWS 300 series are analyzed. The results indicate that in welding condition corresponding to a typical SMA welding those and only those welds in which the ratio Creq/Nieq≲1.48, where Nieq and Creq are the nickel and chromium equivalents on the Schaeffler diagram, solidify with the austenite as the primary or leading phase and the delta ferrite, if any, formed from the rest melt between growing cells or cellular dendrites of the austenite. At room temperature these welds are characterized by a regular general microstructure, soft forms of the ferrite and relatively large compositional differences mainly caused by solidification.read more
Citations
More filters
Journal ArticleDOI
Study on microstructure, mechanical properties and machinability of efficiently additive manufactured AISI 316L stainless steel by high-power direct laser deposition
TL;DR: In this paper, the effect of building direction on the microstructure, mechanical properties and machinability of stainless steel was investigated, and it was found that the micro-structure was homogeneous, at the building direction of 0°, while a number of larger dendritic grains were present in the microstructures, and the tensile properties and hardness values were higher than those at 90°.
Journal ArticleDOI
Microstructural development and solidification cracking susceptibility of austenitic stainless steel welds
J. A. Brooks,A. W. Thompson +1 more
TL;DR: The microstructures of austenitic stainless steel welds typically contain a variety of complex austenite-ferrite structures and this behavior is related to solidification cracking susceptibility as discussed by the authors.
Journal ArticleDOI
Improved weldability diagram for pulsed laser welded austenitic stainless steels
Thomas J. Lienert,J. C. Lippold +1 more
TL;DR: In this paper, the primary solidification mode (PSM) and solidification cracking susceptibility of individual welds on each alloy were identified and correlated with their compositions, and an improved weldability diagram for pulsed Nd:YAG laser welding of austenitic stainless steels was constructed.
Journal ArticleDOI
Solidification and liquation cracking issues in welding
TL;DR: In this paper, the authors reviewed two types of cracking, including the factors that affect cracking and the remedies, and proposed a method to deal with the problems of these two types.
Journal ArticleDOI
Ferritic-austenitic solidification mode in austenitic stainless steel welds
N. Suutala,T. Takalo,T. Moisio +2 more
TL;DR: In this article, the macro-and microstructures of about fifty different stainless welds of the AISI/ AWS 300 series are analyzed under conditions corresponding to a typical shielded metal arc (SMA) welding the welds with a ratio in the range 1.48 and 1.95, respectively.
References
More filters
Journal ArticleDOI
The relationship between solidification and microstructure in austenitic and austenitic-ferritic stainless steel welds
N. Suutala,T. Takalo,T. Moisio +2 more
Journal ArticleDOI
The solidification sequence in an 18-8 stainless steel, investigated by directional solidification
TL;DR: 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.
Journal ArticleDOI
Hot Cracking of Austenitic Steel Weld Metal
TL;DR: In this paper, an experiment was carried out to know the relation between the solidification phases, sulphur microsegregation and hot cracking susceptibility of Ni-Cr alloyed steels.
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