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The effect of initial texture on the twinning behaviors of pure titanium during uniaxial compression was investigated by electron backscattered diffraction (EBSD) technology. The {11 - 22} and {10 - 12} twinning variant selection behaviors were investigated by the Schmid factor (SF), strain compatibility factor (m') and twinning strain tensor. For {11 - 22} contraction twins, multiple twin variants are more likely to form within a grain. For {10 - 12} extension twins, however, single variant is usually observed within one grain. The variant selection of {10 - 12} twinning is more favorable to follow the SF law than that of {11 - 22} twinning. However, both {11 - 22} twinning and {10 - 12} twinning variant selection behaviors can be well explained by the twinning strain tensor. The activated {11 - 22} twinning or {10 - 12} twinning variants can well accommodate the deformation along the compression direction. For intragranular cases, when multiple twins are generated within a grain, most of the activated variants have high SF values, and both {11 - 22} twinning and {10 - 12} twinning activities show stronger orientation dependence. For intergranular twin pairs, the strain compatibility is related to their formation sites. The twin pairs forming in the common boundaries of the two grains have good strain compatibility. However, twin pairs at those triple junctions show poor strain compatibility.
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MATERIALS CHARACTERIZATION
ISSN: 1044-5803
Year: 2020
Volume: 162
4 . 3 4 2
JCR@2020
4 . 8 0 0
JCR@2023
ESI Discipline: MATERIALS SCIENCE;
ESI HC Threshold:196
JCR Journal Grade:1
CAS Journal Grade:1
Cited Count:
WoS CC Cited Count: 16
SCOPUS Cited Count: 14
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0