In the present review, attempts have been made to analyze the metallurgical, mechanical, and corrosion properties of commercial marine alloy duplex stainless steel AISI 2205 with special reference to its weldability, machinability, and surfacing. In the first part, effects of various fusion and solid-state welding processes on joining DSS 2205 with similar and dissimilar metals are addressed. Microstructural changes during the weld cooling cycle such as austenite reformation, partitioning of alloying elements, HAZ transformations, and the intermetallic precipitations are analyzed and compared with the different welding techniques. In the second part, machinability of DSS 2205 is compared with the commercial ASS grades in order to justify the quality of machining. In the third part, the importance of surface quality in a marine exposure is emphasized and the enhancement of surface properties through peening techniques is highlighted. The research gaps and inferences highlighted in this review will be more useful for the fabrications involved in the marine applications. © 2017

Vinoth Jebaraj A

Department of Design and Automation

School of Mechanical Engineering

Vellore Campus

Ajaykumar L

Deepak C.R

Aditya K.V.V.

Fulltext

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Journal of Advanced Research

In the present study, the influence of microstructural changes on the mechanical and corrosion properties of the dissimilar weld between austenitic stainless steel (ASS 316L) and duplex stainless steel (DSS 2205) has been examined and reported. The weld joint was fabricated through the use of gas tungsten arc welding process with a nickel enhanced filler metal ER 2209. The microstructural changes observed in the fusion zone such as nucleation of delta ferrite (δ), austenite (γ) reformation, precipitation of intermetallic phases and the formation of coarser ferrite phases in the HAZ have been reported. Also, the mechanical properties of the weldment such as microhardness, impact toughness and tensile properties have been correlated with microstructural changes. Potentiodynamic polarization test results showed a better electrochemical behavior for ASS 316L than with the weldment and the parent metal of DSS 2205. The austenite phase was found to be electrochemically more stable than the ferrite phase in duplex microstructure. On the other hand, achievement of the stress corrosion cracking resistance by the weldment and the parent metal of DSS was found to be excellent, whereas ASS 316L ended with surface fissures. © 2018, The Indian Institute of Metals - IIM.

Transactions of the Indian Institute of Metals

Investigation of Structure Property Relationship of the Dissimilar Weld Between Austenitic Stainless Steel 316L and Duplex Stainless Steel 2205

The present study centered on the effect of welding induced metallurgical changes on the mechanical properties and corrosion behavior of super duplex stainless steel (SDSS) weldments. The weld joints dealt with in the study has been fabricated through use of filler metal ER 2594 using gas tungsten arc welding process. Microstructural investigation in the weldment exhibited the evolution of austenite (gamma) phases in different morphologies such as grain boundary austenite, needle like elongated austenite (Widmanstätten structure) and intragranular austenite particles. Mechanical properties of the weldments were obtained and compared with the parent metal behavior by conducting Vicker's micro hardness assessment, Charpy impact toughness investigation, tensile and three-point bend experiment. Cyclic polarization curves revealed higher corrosion resistance for the weldment than the parent metal in NaCl corrosion medium. Nickel enriched filler ER 2594 led to the nucleation of additional gamma phases in the fusion zone which are electrochemically more resistant than the delta ferrite phases. Moreover, accelerated stress corrosion cracking (SCC) test proved the SCC resistance of both parent metal and weld regions by protecting the surface without nucleation of any kind of fissures or cracks. © 2018 IOP Publishing Ltd.

Materials Research Express

Analysis of structure property relationship of super duplex stainless steel AISI 2507 weldments for severe corrosive environments

Laser shock peening (LSP) is a modern and efficient thermo-mechanical approach to engineer and modify the surface and subsurface related properties of materials which has been frequently opted by contemporary researchers in the field of peening. The main objective of this review article is to emphasize LSP as a post weld treatment method which may help in the commercialization of LSP which is considered a challenge till date. Combining laser welding and laser shock peening could be an alternative and promising approach for improving weld quality over different conventional methods of post weld treatments. With this hindsight, reports incorporating welding and peening in last decades are reviewed. The notable effects of LSP on the mechanical properties and microstructure of different weldments are also discussed along with the classification and important parameters of LSP. We conclude that LSP can indeed be used as an effective post weld treatment (PWT) method in industrial manufacturing process. © 2018

Journal of Manufacturing Processes

Review: Laser shock peening as post welding treatment technique

After stress corrosion crack testing in a MgCl2 environment, turned surface of super duplex stainless steel showed four types of cracks. The residual stress and surface defects such as feed marks and long grooves generated after machining played a significant role in the direction and orientation of these cracks. The generated cluster of cracks acted as a precursor to the formation of pits. The biaxial tensile stress in the surface promoted successive branching of cracks, which led to high crack density. The subsurface results showed that cracks passing perpendicular to feed marks found more detrimental than the other types. © 2018 Elsevier Ltd

Corrosion Science

Investigation on machining induced surface and subsurface modifications on the stress corrosion crack growth behaviour of super duplex stainless steel

In recent years, issues on greenhouse pollution and power consumption related to the operation of information communication technology (ICT) devices have triggered a huge amount of research work towards green radio communication. Many of the power efficient solutions will introduce cost performance trade-offs. The energy efficient solution which also takes care of the quality requests of the mobile customer is really required for the 5G based green radio communication. It is identified that enhanced nodeBs (eNB) are power inefficient and not suited for many deployment scenarios. Multihop relay (MHR) network is the suitable alternate for eNB especially in the coverage holes and cell edges. But MHR network suffers by various quality issues like site planning and path selection. Many of the site planning and path selection schemes will fail under network imbalance conditions. In this work, we have proposed a hybrid throughput oriented (TO) - load aware spectral efficient routing (LASER) scheme which offers high performance even under network load imbalance conditions. The simulation results proved that the proposed scheme is more suited for future green radio communication. © 2015 River Publishers.

Journal of Green Engineering

Quality of Service Aware Multi-Hop Relay Networks for Green Radio Communication

Engineering Science and Technology, an International Journal

Effect of welding parameters on pitting behavior of GTAW of DSS and super DSS weldments

Journal of Materials Processing Technology

Influence of absorbed nitrogen on microstructure and corrosion resistance of 2205 duplex stainless steel joint processed by fiber laser welding

Journal of Materials Engineering and Performance

The Effect of Constant and Pulsed Current Gas Tungsten Arc Welding on Joint Properties of 2205 Duplex Stainless Steel to 316L Austenitic Stainless Steel

Journal of Materials Science & Technology

Microstructure and Corrosion Resistance of Dissimilar Weld-Joints between Duplex Stainless Steel 2205 and Austenitic Stainless Steel 316L

Weldability, machinability and surfacing of commercial duplex stainless steel AISI2205 for marine applications – A recent review

Journal	Data powered by TypesetJournal of Advanced Research
Publisher	Data powered by TypesetElsevier BV
ISSN	2090-1232
Open Access	Yes