For the ∑5 (36.9°/<100>) GBs, as sin( θ ) increases from 0 to 1, the GBE of β -Ti at 1300 K shows a decreasing trend, which is opposite to the variation trends of GBE for W at 2400 K, as shown in Figure 7 a,b.
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Survey of Grain Boundary Energies in Tungsten and Beta-Titanium at High Temperature.
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