AISI 410 martensitic stainless steel coatings were produced on low carbon steel plates using friction surfacing and manual metal arc welding processes. Microstructure evolution in these coatings was investigated. Dry sliding pin-on-disk wear tests and electrochemical corrosion tests (Tafel and potentiodynamic anodic polarization) were conducted on friction surfaced coatings and manual metal arc coatings in as-deposited condition. Tests were also conducted on alloy 410 bulk material in hardened and tempered condition for comparison. Friction surfaced coatings, which contained a fully martensitic microstructure, showed comparable wear and corrosion resistance to alloy 410 bulk material. On the other hand, manual metal arc coatings, which contained significant amount of δ-ferrite, showed considerably lower hardness, pitting corrosion resistance, and wear resistance compared to friction surfaced coatings. © 2012 Elsevier B.V.

Janaki Ram G D

Department of Metallurgical and Materials Engineering

Bulk materials

Corrosion performance

DRY SLIDING

ELECTROCHEMICAL CORROSION TESTS

FRICTION SURFACING

LOW CARBON STEEL PLATE

Lower hardness

MANUAL METAL ARCS

MARTENSITIC MICROSTRUCTURE

MICROSTRUCTURE EVOLUTIONS

PIN-ON-DISK WEAR TEST

POTENTIODYNAMIC ANODIC POLARIZATION

TAFEL

WEAR AND CORROSION RESISTANCE

WELD OVERLAY

corrosion

Corrosion resistance

Electric arc welding

Electrochemical corrosion

Friction

Friction welding

Martensitic Stainless Steel

Materials handling equipment

microstructure

Pitting

tribology

Wear of materials

Coatings

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Surface and Coatings Technology

Friction surfacing is a novel solid-state surfacing process with several advantages over conventional weld overlay processes. In this work, the corrosion behavior of AISI 316L stainless steel coatings made using friction surfacing and manual metal arc welding processes was comparatively evaluated. Friction surfaced coatings exhibited superior general and pitting corrosion resistance compared to manual metal arc coatings, while both the coatings were found to be immune to intergranular corrosion. Compared to alloy 316L bulk material, friction surfaced coatings showed better pitting corrosion resistance, but considerably lower general corrosion resistance. © 2012 Elsevier Ltd.

Corrosion Science

Corrosion performance of AISI 316L friction surfaced coatings

Wear and corrosion performance of AISI 410 martensitic stainless steel coatings produced using friction surfacing and manual metal arc welding

While martensitic stainless steel AISI 440C is an attractive material for wear protection in many industrial applications, it is difficult to realize satisfactory coatings in this material using conventional weld overlay processes. Friction surfacing, a promising solid-state process, can help in this regard. In the current study, alloy 440C coatings were successfully made on low carbon steel substrates using friction surfacing. Bend and shear tests on coated specimens indicated excellent coating/substrate bonding. Microstructures, corrosion behavior, and wear performance of these coatings were compared with standard heat treated alloy 440C bulk material. While friction surfaced coatings in alloy 440C exhibited superior corrosion resistance to standard heat treated alloy 440C bulk material, their wear resistance was found to be somewhat inferior. Apart from these studies, experiments were conducted to assess the potential of the process for wide area coverage. Studies show that it is possible to achieve well-bonded coatings consisting of multiple overlapping tracks with excellent inter-track bonding. Overall, the current study demonstrates that friction surfacing is a very useful process for producing wear resistant coatings in difficult-to-fusion-deposit materials such as alloy 440C martensitic stainless steel. © 2012 Elsevier B.V.

Microstructures and properties of friction surfaced coatings in AISI 440C martensitic stainless steel

Friction surfacing involves complex thermo-mechanical phenomena. In this study, the nature of dynamic recrystallization in friction surfaced austenitic stainless steel AISI 316L coatings was investigated using electron backscattered diffraction and transmission electron microscopy. The results show that the alloy 316L undergoes discontinuous dynamic recrystallization under conditions of moderate Zener-Hollomon parameter during friction surfacing. © 2012 Elsevier Inc. All rights reserved.

Materials Characterization

Dynamic recrystallization in friction surfaced austenitic stainless steel coatings

Infrared thermography was used to record thermal profiles during friction surfacing. Thermal profiles for different sets of consumable rod/substrates (tool steel/steel; copper/steel and copper/copper) were recorded and analyzed. The thermal profiles showed distinct stages of plastic deformation with respect to temperature. The mechanism of bonding or no-bonding was discussed based on thermal profile data. It was found that a metallurgically bonded coating can be obtained if the flow stress of the plasticized material is comparable with the localized stress developed due to axial loading. © 2011 Elsevier B.V.All rights reserved.

Journal of Materials Processing Technology

Tool steel and copper coatings by friction surfacing - A thermography study

Infrared (IR) thermography was used to measure thermal profiles in the coating, consumable rod, and substrate during friction surfacing. A sudden raise followed by a steady state in thermal profile was observed and attributed to viscous heat dissipation during plastic deformation. The retreating side of the coating experienced higher temperature compared to the advancing side, indicating that the hot plasticized metal is carried from the advancing side to the retreating side. © 2011 The Minerals, Metals &amp; Materials Society and ASM International.

Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

Thermal profiling using infrared thermography in friction surfacing

Journal	Surface and Coatings Technology
ISSN	02578972
Open Access	No