TY  - JOUR
T1  - The Effect of Heat Treatment Conditions on the Microstructural
Characterization, Mechanical Properties and Corrosion
Behavior of Super Duplex Stainless Steel Casting
AU - Duc Huy, Tran AU - Thi Thanh Huyen, Bui AU - Van Quang, Do 
JO  - Journal of Engineering and Applied Sciences
VL  - 13
IS  - 5
SP  - 1239
EP  - 1245
PY  - 2018
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2018.1239.1245
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2018.1239.1245
KW  - impact
KW  -diminish
KW  -quenched aging
KW  -casting
KW  -Super duplex stainless steel
KW  -corrosion resistance
AB  - The effect of solution annealing temperature ranging from 1050-1100°C and aging at 480°C on the
microstructure, mechanical properties and pitting corrosion resistance of Super Duplex Stainless Steel (SDSS)
casting were investigated. Obtained results showed that the content of ferrite phase slightly increased as
decreasing of austenite phase. The ε-Cu was observed into incoherent type after solution annealing and
coherent type after solution annealing and aging at 480°C. The small particles of the g-phase dispersed in ferrite
matrix increase their hardness and diminish corrosion resistance of ferrite phase. Especially, the little negative
hysteresis and high breakdown potentials determined from cyclic potentiodynamic polarization curves of SDSS
showed that the high pitting corrosion resistance were obtained for the sample with both annealing and aging.
The mechanical properties of the SDSS casting were also investigated such as hardness, micro hardness and
impact strength. The value of hardness and impact strength of SDSS casting which were solution annealing
at 1100°C and aging at 480°C were 295 HB and 77 J, respectively.
ER  -