Heat Input and Post Weld Heat Treatment Effects on Reduced-Activation Ferritic/Martensitic Steel Friction Stir Welds

Tang, Wenming; Chen, Jian; Yu, Xinghua; Frederick, David Alan; Feng, Zhili

doi:10.1007/978-3-319-48173-9_9

Cited by 7 publications

(2 citation statements)

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“…In recent years, several efforts have been directed on Reduced Activation Ferritic-Martensitic steels (F82H, Eurofer-97, INRAFM) towards assessing the effects of tool rotational and traverse speeds on evolving microstructures and mechanical properties [8][9][10]. It has been shown that the increase in tool rotational speed increases the heat input and also leads to wider stir zone (SZ) and thermo-mechanically affected zone (TMAZ).…”

Section: Introductionmentioning

confidence: 99%

“…This necessitates detailed understanding of section thickness effect on microstructure and mechanical properties in order to arrive at optimum FSW parameters and appropriate PWHTs for a particular thickness. In the past, bead-on-plate FSW experiments have been conducted on 15 mm thick Eurofer-97 plate employing a PcBN tool with a pin height of 5 mm [8]. Though these experiments resulted in understanding the microstructure development to a certain extent, the mechanical properties information on full penetration welds could not be obtained.…”

Section: Introductionmentioning

confidence: 99%

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Friction stir welding of thick section reduced activation ferritic–martensitic steel

Manugula

Rajulapati

Reddy

et al. 2018

Science and Technology of Welding and Joining

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Full penetration friction stir welding was conducted on 12 mm thick reduced activation ferritic-martensitic steel at tool rotational speeds of 500 and 900 rev min −1 . Comparator welds at 500 rev min −1 were also produced in 6 mm thick reduced activation ferritic-martensitic steel plate to evaluate section thickness effects. Increase in section thickness led to an increase in heat input, which strongly influenced the microstructure evolution in stir zone (SZ), thermomechanical affected zone and the overall hardness in the SZ of this steel. In the as-welded condition, the base metal microstructure was significantly altered and resulted in carbide-free grain boundaries. The desirable microstructure and mechanical properties were achieved by subjecting the as-welded joints to appropriate post-weld heat treatments.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%