Understanding the behavior of weldment at elevated temperatures and especially their corrosion behavior has recently become an object of scientific investigation. Investigation has been carried out on friction-welded AISI 4140 and AISI 304 under Na2SO4∈+∈V2O 5 (60%) environment at 500 to 600°C under cyclic condition. The resulting oxide scales in the weldment have been characterized systematically using surface analytical techniques. Scale thickness on the low alloy steel side was found to be higher and was also prone to spalling. Weld area was found to be more susceptible to degradation than in base metals. The influences of welding parameters on the hot corrosion are discussed. © 2007 Springer-Verlag London Limited.

Arivazhagan N

Department of Manufacturing Engineering

School of Mechanical Engineering

Vellore Campus

Singh S

Prakash S

Reddy G.M.

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

The International Journal of Advanced Manufacturing Technology

High temperature corrosion of weldments is a major obstacle in various industrial applications such as gas turbines, boilers, diesel engines and furnaces.The materials are subjected to hot corrosion when they are working at elevated temperature. The objective of this work, to investigate the high temperature corrosion on activated fiux TIG welded C-22 and AISI 316 in eutectic mixture of K2SO4-60%NaCl environment at 650°C. After hot corrosion study, the weight gain was observed from thermo gravimetric analysis and the corrosive products were identified on the scale using XRD, SEM and EDAX analysis. From the results of experiments, Cr2O3 acts as a protective oxide layer of C-22 side which protect the surface from the molten salt environment at high temperature. © 2017 Elsevier Ltd.

Materials Today: Proceedings

Hot Corrosion Studies on Dissimilar Weldments C-22 and AISI 316L in the Molten Salt K2SO4 + 60%wt NaCl Environment

The disposal of used automobiles tyres is a major environmental concern of the day. Annually, there are 1.2 billion tyres seeking disposal issues globally. Concrete as a major construction material can potentially adopt processed rubber waste—derived from tyres as a partial replacement for aggregates. The present study is focused on mechanical and thermal properties of concretes with rubber as partial replacement to well-graded conventional aggregates. The study includes replacement of 10, 20, 30 and 100% of coarse aggregate with waste tyre aggregates and was compared with conventional M30 grade concrete. Concretes were subjected a thermal cyclic heating of 50 °C for a period of 7 days. The results showed that the weight of the rubber concrete is reduced by 12% compared to the conventional concrete and the strength of the concrete reduces with the increase in rubber content. At ambient temperatures, the rubber concrete was found thermally stable. The compressive strengths were found increasing after cyclic heating of 50 °C for a period of 7 days. This effect may be due the effect of Portland pozzolana cement which has 30% of fly ash in it. From this study, it can be concluded that rubber waste concretes can be a potential candidate for structural and non-load bearing structures at ambient temperatures. © 2019, Springer Nature Singapore Pte Ltd.

Lecture Notes in Mechanical Engineering

On Mechanical and Thermal Properties of Concretes with Rubber as Partial Replacement to Well-Graded Conventional Aggregates

71 Power generating machinery and equipment: Switzerland

Anti-Corrosion Methods and Materials

NACE International Corrosion Certification Programming moves to the new NACE International Institute

Journal of Materials Processing Technology

Dissimilar metal friction welding of austenitic–ferritic stainless steels

Engineering Failure Analysis

Hot corrosion in gas turbine components

British Corrosion Journal

Effects of MgO and CaO on hot corrosion of Fe base superalloy Superfer 800H in Na2SO4-60%V205environment

An assessment of hardness, impact strength, and hot corrosion behaviour of friction-welded dissimilar weldments between AISI 4140 and AISI 304

Journal	Data powered by TypesetThe International Journal of Advanced Manufacturing Technology
Publisher	Data powered by TypesetSpringer Science and Business Media LLC
ISSN	0268-3768
Open Access	No