2015
DOI: 10.1016/j.ultramic.2015.05.014
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Grain boundary study of technically pure molybdenum by combining APT and TKD

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Cited by 39 publications
(18 citation statements)
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“…In recent atom probe studies, oxygen, phosphorus and nitrogen segregations at HAGB were found, which can decrease the grain boundary strength causing these grain boundary cracks. 15 Additionally, it is believed that the HAGBs of molybdenum are intrinsically weak. 7,8,32 The DBTT of the L-T oriented sample is lower, which can be correlated with the premature occurrence of delamination cracks causing an increase in toughness.…”
Section: T-l and L-t Orientationmentioning
confidence: 99%
See 1 more Smart Citation
“…In recent atom probe studies, oxygen, phosphorus and nitrogen segregations at HAGB were found, which can decrease the grain boundary strength causing these grain boundary cracks. 15 Additionally, it is believed that the HAGBs of molybdenum are intrinsically weak. 7,8,32 The DBTT of the L-T oriented sample is lower, which can be correlated with the premature occurrence of delamination cracks causing an increase in toughness.…”
Section: T-l and L-t Orientationmentioning
confidence: 99%
“…[4][5][6][7][8][9] Nevertheless, recrystallization annealing of the as-deformed and stress-relieved condition of molybdenum leads to a significant increase of the DBTT and even more to intergranular embrittlement, which is believed to be caused by the larger grain size and segregation enrichments at the grain boundaries. [4][5][6][10][11][12][13] Recent atom probe investigations revealed phosphor, nitrogen and oxygen impurities at the grain boundaries of technically pure molybdenum 14,15 of which especially segregated oxygen is assumed to promote intergranular failure. 6,11,12 By adding small amounts of carbon and boron, the ductility of molybdenum can be improved.…”
Section: Introductionmentioning
confidence: 99%
“…As the implementation of APT expands into new application areas, there is a continuing desire to validate or correlate data with other well-established techniques. This correlative information can be used to calibrate or constrain reconstructions (Arslan et al, 2008; Thompson et al, 2009; Cojocaru-Mirédin et al, 2011; Haley et al, 2011; Larson et al, 2011; Hartshorne et al, 2014; Xiong & Weyland, 2014; Grenier et al, 2015; Herbig et al, 2015; Lefebvre et al, 2015), but it can also provide information on grain orientation (Taheri et al, 2010; Cojocaru-Mirédin et al, 2011; Babinsky et al, 2014, 2015; Takahashi et al, 2014; Chen et al, 2015, 2016; Herbig et al, 2015; Rice et al, 2015, 2016; ) and locations of defects and phase boundaries which can improve site-specific ROI targeting and placement (Cojocaru-Mirédin et al, 2011; Babinsky et al, 2014, 2015; Hartshorne et al, 2014; Chen et al, 2015, 2016; Herbig et al, 2015; Rice et al, 2015, 2016). FIB-based specimen preparation certainly provides a means to characterize specimen shapes with scanning electron microscopy (SEM) during manufacture; however, the quality of the available information is often constrained by the diminishing electron-scattering volumes near the apex, which become vanishingly small for the majority of the analyzable region in a finished specimen.…”
Section: Correlative Methods; Grain and Phase Boundariesmentioning
confidence: 99%
“…However, at present, there is limited quantitative understanding of how solute distribution is correlated with microstructure (e.g., all grain boundary locations), particularly at the finest nanoscale grain sizes, as APT does not directly yield interface features. Many studies have combined APT and other characterization techniques such as transmission Kikuchi diffraction [32], electron backscatter diffraction [33], and transmission electron microscopy [34]. There is also growing recognition of the need for large-scale grain reconstruction capabilities directly using APT data [35,36].…”
Section: Introductionmentioning
confidence: 99%