Which outcome increases the risk of cast iron cracking, when improperly quenched during Song Dynasty armoring?

💡 Explanation

Martensite formation creates high internal stress because the phase transformation results in volume changes within the cooling iron. Rapid temperature reduction impedes dislocation slip, therefore increasing stress rather than accommodating deformation through creep.

• Which outcome occurs along Inca terraces when poorly-compacted backfill settles unevenly?
• Which outcome occurred typically when medieval Islamic mathematicians used al-jabr to allocate inheritance portions?
• Which outcome occurs when a navigator using a sextant mistakenly sights on the wrong star during celestial navigation?
• Hydraulic jumps within gravity-fed Mesopotamian irrigation canals caused which effect?
• Which cumulative failure mode impacted long-term stability of Roman roads built on clay-rich soil?
• Which agricultural innovation becomes impossible if contour terracing collapses?