High temperature creep of a helium-implanted titanium aluminide alloy

Magnusson, Per; Chen, Jiachao; Hoffelner, Wolfgang

doi:10.1016/j.jnucmat.2010.11.094

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…Helium ion beam irradiation exists in the universe and in other irradiation environments [18]. Helium concentrates in irradiated crystalline materials, forms helium bubbles near the peak helium concentration area, and causes the appearance of material swelling, blistering, peeling, embrittling, and cracking from irradiation damage, which results in material aging and mechanical performance degradation [19][20][21]. A study of the irradiation resistance of Ni-based metallic glass with helium ion beam irradiation would therefore be useful.…”

Section: Introductionmentioning

confidence: 99%

Resistance to He2+ irradiation damage in metallic glass Ta38Ni62

Hou

Mei

Zhang

et al. 2016

Applied Surface Science

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a b s t r a c tMetallic glass Ta 38 Ni 62 strips, metallic W, and V 87.5 Cr 4.17 Ti 4.17 Nb 4.17 alloy were irradiated using a 500 keV He 2+ ion beam at different fluence to compare the metallic glass resistance to irradiation. Metallic glass Ta 38 Ni 62 remained amorphous at different He 2+ irradiation fluence. Transmission electron microscopy analysis revealed the presence of helium bubbles at the end of the range of helium ions in the metallic glass. No significant damage resulted in the metallic glass surface, and the root mean square roughness increased nonlinearly with the increase in fluence. At 1 × 10 18 ions/cm 2 , metallic W appeared in larger sunken areas on the surface and V 87.5 Cr 4.17 Ti 4.17 Nb 4.17 alloy experienced multi-layer flaking. The metallic glass Ta 38 Ni 62 resistance to He 2+ ion beam irradiation was better than that of metallic W, and that of the V 87.5 Cr 4.17 Ti 4.17 Nb 4.17 alloy was the poorest.

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Section: Introductionmentioning

confidence: 99%

Resistance to He2+ irradiation damage in metallic glass Ta38Ni62

Hou

Mei

Zhang

et al. 2016

Applied Surface Science

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“…6(b), after He-ion irradiation to 100 appm (0.012 dpa), helium bubbles are mainly observed at interfaces within the a 2 lamellae, i.e. the interfaces between the b and c phases or the b and remnant a 2 phases or the c and remnant a 2 phases in the Ti47Al2W05Si alloy [26,63]. Hence, the introduction of the b phase precipitates in the lamellar microstructure should act as sinks for radiation defects and enhance the radiation damage resistance of TiAl alloys as they do for creep.…”

Section: Effect Of Interlamellar Precipitatesmentioning

confidence: 99%