Khajuria, A and Modassir, A and Bedi, R and Kumar, Rajneesh and Ghosh, M and Das, C R (2020) Microstructural investigations on simulated intercritical heat-affected zone of boron modified P91-steel. Materials Science and Technology, 36(13) (IF-1.835).
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Conventional P91 and boron modified P91-steels were considered in the present investigation. Using Gleeble, weld intercritical heat-affected zone (ICHAZ) was processed. Conventional microscopy was done along with electron back-scattered diffraction for both specimens. Lath boundary of martensite was more, and preferably oriented for P91B-ICHAZ than P91-ICHAZ. Lattice strain was high and lath mobility was low for P91B-ICHAZ in comparison to P91-ICHAZ. Large fraction of ferritic grain structure (39.1%) and small fraction of fresh martensitic grain structure (9.5%) in P91-ICHAZ, whereas small fraction of ferritic grain structure (10.7%) and large fraction of fresh martensitic grain structure (32.7%) in P91B-ICHAZ was observed. However, tempered martensite exhibited meager variation. These differences between ICHAZ simulations were attributed to the presence of 100ppm-boron in P91B-steel.
|Uncontrolled Keywords:||P91-steel,P91B-steel, effect of boron,Gleeble simulation, intercritical heat-affected zone,electron back-scattered diffraction,recrystallisation,impression creep|
|Divisions:||Material Science and Technology|
|Deposited By:||Sahu A K|
|Deposited On:||25 Nov 2020 17:14|
|Last Modified:||25 Nov 2020 17:14|
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