Effect of grain boundary engineering on microstructural stability during annealing

Schlegel, Scott; Hopkins, Sharla; Frary, Megan

doi:10.1016/j.scriptamat.2009.03.013

Cited by 38 publications

(16 citation statements)

References 19 publications

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“…Through grain boundary engineering, the fraction of low‐Σ boundaries, typically between 30% and 60% in conventionally processed materials, can be increased up to 80%. During the annealing processes of grain boundary engineering, low‐energy, lower‐mobility boundaries increase in length as higher‐mobility boundaries are consumed as a consequence of grain growth . For CoCrMo in non‐articulating surfaces such as the femoral neck and stem, a grain size on the coarser end of the allowable range (∼50 μm) may be ideal since these implant–tissue interfaces are subject to corrosion but not mechanical wear.…”

Section: Discussionmentioning

confidence: 99%

Intergranular pitting corrosion of CoCrMo biomedical implant alloy

et al. 2013

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CoCrMo samples of varying microstructure and carbon content were electrochemically corroded in vitro and examined by scanning electron microscopy and electron backscatter diffraction techniques. The rate of corrosion was minimized (80% reduction from icorr = 1396 nA/cm(2) to icorr = 276 nA/cm(2) ) in high-carbon CoCrMo alloys which displayed a coarser grain structure and partially dissolved second phases, achieved by solution annealing at higher temperatures for longer periods of time. The mechanism of degradation was intergranular pitting corrosion, localized at phase boundaries and grain boundaries of high energy (high-angle and low lattice coincidence, Σ11 or higher); grain boundaries of lower energy did not appear to corrode. This suggests the possibility of grain boundary engineering to improve the performance of metal implant devices. © 2013 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 102B: 850-859, 2014.

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Section: Discussionmentioning

confidence: 99%

Intergranular pitting corrosion of CoCrMo biomedical implant alloy

et al. 2013

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“…Previous studies have shown GBE to be a successful method in mitigating intergranular stress corrosion cracking, 11,12 IGC, 5,13,14 hydrogen embrittlement, 15 and grain growth. 16 GBE is typically associated with the increase in specific coincidence site lattice (CSL) GBs, which have been considered special boundaries. 4 Early research within the field of GBE described some or all low Σ CSL GBs as special.…”

Section: Introductionmentioning

confidence: 99%

Tracking the evolution of intergranular corrosion through twin-related domains in grain boundary networks

et al. 2018

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Tailoring the grain boundary network is desired to improve grain boundary-dependent phenomena such as intergranular corrosion. An important grain boundary network descriptor in heavily twinned microstructures is the twin-related domain, a cluster of twinrelated grains. We indicate the advantages of using twin-related domains and subsequent statistics to provide new insight into how a grain boundary networks respond to intergranular corrosion in a heavily twinned grain boundary engineered 316L stainless steel. The results highlight that intergranular corrosion is typically arrested inside twin-related domains at coherent twins or low-angle grain boundaries. Isolated scenarios exist, however, where intergranular corrosion propagation persists in the grain boundary network through higher-order twin-related boundaries.

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“…Reed showed a direct relationship between the TRD length scale and material performance [19]. Others have correlated enhancing of mechanical properties [20,21], electronic properties [22e24], and grain growth stagnation [25,26] with grain boundary engineering processing steps. Given that TRD development is a consequence of grain boundary engineering, these results likely indirectly correlate with TRD development as well.…”

Section: Introductionmentioning

confidence: 99%

Twin related domains in 3D microstructures of conventionally processed and grain boundary engineered materials

Lind

Kumar

2016

Acta Materialia

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a b s t r a c tThe concept of twin-limited microstructures has been explored in the literature as a crystallographically constrained grain boundary network connected via only coincident site lattice (CSL) boundaries. The advent of orientation imaging has made classification of twin-related domains (TRD) or any other orientation cluster experimentally accessible in 2D using EBSD. With the emergence of 3D orientation mapping, a comparison of TRDs in measured 3D microstructures is performed and compared against their 2D counterparts. The TRD analysis is performed on a conventionally processed (CP) and a grain boundary engineered (EM) high purity copper sample that have been subjected to successive anneal procedures to promote grain growth. The EM sample shows extremely large TRDs which begin to approach that of a twin-limited microstructure, while the TRDs in the CP sample remain relatively small and remote.

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Effect of grain boundary engineering on microstructural stability during annealing

Cited by 38 publications

References 19 publications

Intergranular pitting corrosion of CoCrMo biomedical implant alloy

Intergranular pitting corrosion of CoCrMo biomedical implant alloy

Tracking the evolution of intergranular corrosion through twin-related domains in grain boundary networks

Twin related domains in 3D microstructures of conventionally processed and grain boundary engineered materials

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