Increased crossbow performance during China's Han Dynasty resulted when increased quenching rates induced which material property change?

💡 Explanation

Faster quenching increased carbon diffusion, driving martensite formation. Martensite causes work hardening, which increases yield strength because the steel withstands higher elastic deformation before permanent changes occur; therefore, allowing greater force storage compared with options A/B/D.

• Which outcome likely results when terrace retaining walls experience increased soil moisture content combined with freeze-thaw cycles?
• Which consequence occurs when thermal cycles act on pietra dura inlay?
• For pre-industrial Viking rope bridges vulnerable to sag, which mechanism amplified destabilizing vibrations resulting in potential collapse under load?
• Which outcome resulted from prolonged exposure of arsenical bronze tools to acidic soil in ancient Mesopotamia?
• Which outcome occurs due to settlement beneath the foundations of a Roman castrum's curtain wall?
• On Viking longships, which consequence arises from inelasticity in rope bridge suspension?