کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1468582 | 1510002 | 2015 | 7 صفحه PDF | دانلود رایگان |

• Grain refinement improved the resistance to H embrittlement of Fe–Mn–C TWIP steel.
• The H concentration segregated at grain boundaries was reduced by grain refinement.
• Junctions of twin–twin and twin–grain boundaries were also reduced in fine grains.
• The H migration to twin junctions during tensile tests was inactive in fine grains.
The effect of grain size on hydrogen embrittlement (HE) was investigated using Fe–18Mn–0.6C twinning-induced plasticity (TWIP) steel without Al through slow tensile tests and thermal desorption analyses. The grain refinement improved the resistance to HE of TWIP steel by suppressing a ductile to brittle transition. The high ductility of fine-grained specimens resulted from the low densities of twin boundaries, twin–twin junctions, and twin–grain boundary junctions, which are hydrogen-enriched during tensile tests, due to inactive mechanical twinning.
Journal: Corrosion Science - Volume 93, April 2015, Pages 63–69