Controlled Evolution of Coincidence Site Lattice Related Grain Boundaries

Vaid, Aviral; Mittal, Kalpi; Sahu, Sandeep; Shekhar, Shashank

doi:10.1007/s12666-016-0834-7

Cited by 14 publications

(1 citation statement)

References 27 publications

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“…Multiple cycles of low strains and heat treatment have also been tried in most of the earlier studies, until desired strain is achieved [20,21]. However, most of these studies, including our own [22] have shown that fraction of low angle boundaries also increases drastically with increasing strain. Low angle boundaries are relatively unstable at high temperature and render the material unusable for even moderate temperatures [23].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Property Evolution for Hot-Rolled and Cold-Rolled Austenitic Stainless Steel 316L

Sharma

Shekhar

2016

Trans Indian Inst Met

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Grain boundary character distribution plays an important role in determining the functional and mechanical properties of polycrystalline materials. The aim of this work was to achieve improved coincident site lattice (CSL) fraction without increasing low angle grain boundary (LAGB) proportion. We utilized single-step thermo-mechanical processing route involving rolling followed by short heat treatment and compared the effect of rolling temperature. Our results indicated that rolling at elevated temperature led to significant increase in the fraction of special boundaries while keeping the fraction of LAGB very low, as desired. We conducted thermal stability of our sample-conditions at elevated temperatures for various lengths of time and found the microstructure of the samples to be stable up to 1000°C. This study showed that even commercially suitable process (single step processing with short heat treatment duration) could lead to microstructure with considerable increase in CSL boundaries fraction, improved hardness values and good thermal stability.

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