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Which outcome accelerates diffusion-driven hydrogen embrittlement in austenitic stainless steel?

A)Increased yield strength via grain refinement
B)Formation of stress-induced martensite
C)Increased chromium content stabilizes passivity
D)Reduced sulfur content decreases diffusivity

💡 Explanation

Formation of stress-induced martensite traps hydrogen via the Cottrell atmosphere mechanism; because trapped hydrogen concentrates at these sites, localized cracking accelerates, therefore, embrittlement advances rather than being mitigated by enhanced yield strength or chromium passivation.

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