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← TechnologyWhich outcome follows welding quenched high-strength steel members?
A)Hydrogen-induced cracking risk increases sharply✓
B)Ferrite grain growth reduces material toughness
C)Amorphous phase increases above 1000 degrees
D)Martensite transforms to tempered bainite
💡 Explanation
Cold cracking risk increases during welding because hydrogen diffusion into the heat-affected zone encourages brittle fracture under residual tensile stress, therefore, hydrogen induced-cracking starts, rather than bainitic transformation without extensive heat impact affecting crystalline structure.
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