Friction stir welding of maraging steel (Grade-250)

Meshram, Suresh; Reddy, G. Madhusudhan; Pandey, Sunil

doi:10.1016/j.matdes.2013.01.016

Cited by 44 publications

(26 citation statements)

References 16 publications

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“…The low carbon content avoids the carbides precipitation. The alloy gains strength from the precipitation of intermetallic phases in the martensite matrix [9]. The morphology and crystal structure of the precipitates depend on the composition of the alloy, aging temperature and time.…”

Section: Introductionmentioning

confidence: 99%

Tribological Behavior of New Martensitic Stainless Steels Using Scratch and Dry Wear Test

et al. 2014

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This paper focuses on the tribological characterization of new martensitic stainless steels by two different tribological methods (scratch and dry wear tests) and their comparison to the austenitic standard stainless steel AISI 316L. The scratch test allows obtaining critical loads, scratch friction coefficients, scratch hardness and specific scratch wear rate, and the dry wear test to quantify wear volumes. The damage has been studied by ex situ scanning electron microscopy. Wear resistance was related to the hardness and the microstructure of the studied materials, where martensitic stainless steels exhibit higher scratch wear resistance than the austenitic one, but higher hardness of the martensitic alloys did not give better scratch resistance when comparing with themselves. It has been proved it is possible to evaluate the scratch wear resistance of bulk stainless steels using scratch test. The austenitic material presented lower wear volume than the martensitic ones after the dry wear test due to phase transformation and the hardening during sliding.

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Section: Introductionmentioning

confidence: 99%

Tribological Behavior of New Martensitic Stainless Steels Using Scratch and Dry Wear Test

et al. 2014

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“…3 shows a typical joint appearance processed at welding speed of 100 mm/min and tool speed rotating of 400 rpm from the top surface. No groove-like defects [25] were observed along the weld line, indicating that the heat input was sufficient to ensure the material flow during FSW process [26,27]. Dye penetrant inspection was conducted to reveal surface cracks and the inspection results confirmed the absence of surface cracks in the weld.…”

Section: Accepted Manuscriptmentioning

confidence: 97%

Microstructure, mechanical and corrosion properties of friction stir welded high nitrogen nickel-free austenitic stainless steel

et al. 2015

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“…It is observed that the SZ surface is characterized by the presence of a smooth, closely spaced ripple formation. Under the above welding parameters, the sample was perfectly welded without any surface-breaking defects like pores, groove-like defects and surface galling, which implies that the heat-input was sufficient to maintain the material flow during FSW process [21]. In addition, micro-hardness was performed traversing the joint interface both horizontally and longitudinally.…”

Section: Macro-and Microstructure Observationmentioning

confidence: 99%

Microstructure, Mechanical and Corrosion Properties of Friction Stir Welding High Nitrogen Martensitic Stainless Steel 30Cr15Mo1N

Geng

Feng

et al. 2016

Metals

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High nitrogen martensitic stainless steel 30Cr15Mo1N plates were successfully welded by friction stir welding (FSW) at a tool rotation speed of 300 rpm with a welding speed of 100 mm/min, using W-Re tool. The sound joint with no significant nitrogen loss was successfully produced. Microstructure, mechanical and corrosion properties of an FSW joint were investigated. The results suggest that the grain size of the stir zone (SZ) is larger than the base metal (BM) and is much larger the case in SZ-top. Some carbides and nitrides rich in chromium were found in BM while not observed in SZ. The martensitic phase in SZ could transform to austenite phase during the FSW process and the higher peak temperature, the greater degree of transformation. The hardness of SZ is significantly lower than that of the BM. An abrupt change of hardness defined as hard zone (HZ) was found in the thermo-mechanically affected zone (TMAZ) on the advancing side (AS), and the HZ is attributed to a combination result of temperature, deformation, and material flow behavior. The corrosion resistance of SZ is superior to that of BM, which can be attributed to less precipitation and lower angle boundaries (LABs). The corrosion resistance of SZ-bottom is slight higher than that of SZ-top because of the finer grained structure.

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Friction stir welding of maraging steel (Grade-250)

Cited by 44 publications

References 16 publications

Tribological Behavior of New Martensitic Stainless Steels Using Scratch and Dry Wear Test

Tribological Behavior of New Martensitic Stainless Steels Using Scratch and Dry Wear Test

Microstructure, mechanical and corrosion properties of friction stir welded high nitrogen nickel-free austenitic stainless steel

Microstructure, Mechanical and Corrosion Properties of Friction Stir Welding High Nitrogen Martensitic Stainless Steel 30Cr15Mo1N

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