Book ChapterDOI
Friction Stir Processing of 2507 Super Duplex Stainless Steel: Microstructure and Corrosion Behaviour
Meerambika Mishra,G. Gunasekaran,A.G. Rao,Bhagwati Prasad Kashyap,Nityanand Prabhu +4 more
- pp 289-296
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TLDR
In this article, the Mott-Schottky analysis confirmed that the charge carrier density in the passive oxide layer is decreased with decreasing grain size and increased number of passes led to further reduction in grain size.Abstract:
Friction stir processing (FSP) has been shown to be effective in the microstructural modification. In this study, 2507 super duplex stainless steel was subjected to multipass FSP and the processed samples were investigated. Refinement in grain size of both ferrite and austenite was observed in the stir zone of the processed samples. Increased number of passes led to further reduction in grain size. Anodic polarization studies in 3.5 wt% NaCl solution showed that the processed samples possessed improved corrosion resistance. The Mott-Schottky analysis confirmed that the charge carrier density in the passive oxide layer is decreased with decreasing grain size.read more
Citations
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Journal ArticleDOI
Processing of duplex stainless steel by WEDM
TL;DR: In this article, the authors investigated the manufacturing process of 2205 duplex stainless steel by wire electrical discharge machining where the effects of pulse-on time (PONT), wire tension and pulse-off time (POT) were investigated.
Journal ArticleDOI
Microstructure evolution of friction stir processed 2507 duplex stainless steel
Shikang Gao,Hongyun Zhao,Zhang Renxiao,Chengyue Ma,Li Zhou,Guo Chen,Degang Li,Haifeng Yang,Xiaoguo Song,Yunqiang Zhao +9 more
TL;DR: In this paper, the microstructure evolution of friction stir processed 2507 duplex stainless steel was investigated at rotational speed of 400rpm and traverse speed of 100mm/min.
References
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Journal ArticleDOI
Superplastic deformation behaviour of friction stir processed 7075Al alloy
TL;DR: In this article, two fine-grained 7075Al alloys with a grain size of 3.8 and 7.5 μm were subjected to friction stir processing (FSP) with different processing parameters.
Journal ArticleDOI
Microstructure and mechanical properties of friction stir welded SAF 2507 super duplex stainless steel
TL;DR: In this article, the microstructure and mechanical properties of friction stir welded SAF 2507 super duplex stainless steel were examined and high quality, full-penetration welds were successfully produced in the super-duplex stainless steel by friction stir welding (FSW) using polycrystalline cubic boron nitride (PCBN) tool.
Journal ArticleDOI
Comparison of electrochemical behavior between coarse-grained and fine-grained AISI 430 ferritic stainless steel by Mott–Schottky analysis and EIS measurements
TL;DR: In this article, the electrochemical behavior of coarse-grained and finegrained AISI 430 ferritic stainless steel in 0.1 M HNO 3 solution was investigated.
Journal ArticleDOI
Critical pitting and repassivation temperatures for duplex stainless steel in chloride solutions
TL;DR: In this paper, the critical pitting temperature (CPT) and critical repassivation temperature (Tr) for two kinds of duplex stainless steels (DSS) were investigated in 1.5 m NaCl solution using the cyclic thermammetry method.
Journal ArticleDOI
High strain rate superplasticity in friction stir processed Al–Mg–Zr alloy
TL;DR: In this article, the superplastic deformation behavior of FSP Al-4Mg-1Zr alloy was investigated in strain rate range of 1×10−3 to 1 s−1 and temperature range of 350-550°C and compared with that of as-rolled one.