Latching or locking deployment hinges are provided that include a shape-memory alloy (SMA) pre-load device configured to induce a pre-load across a contact interface of the latching hinge in a direction substantially perpendicular to the hinge pivot axis when the latching hinge is in a closed condition. The hinges may be sprung or actuated using a powered drive mechanism. Some implementations may feature a sprung latch/hook that is tensioned using the SMA pre-load device. Some other implementations may feature a multi-bar linkage that is tensioned using the SMA pre-load device.
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