Fatigue crack growth rate and fracture characteristics of SP700 and Ti-6Al-4V titanium alloys with fine-grained structures obtained through a new thermo-mechanical process were studied. The results showed that SP700 had lower fatigue crack growth rate than that of Ti-6Al-4V,especially at high ΔK.SP700 and Ti-6Al-4V showed mainly identical wave slip fatigue fracture characteristics.
Key words
SP700 /
Ti-6Al-4V /
fatigue crack growth
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
OUCHI C.Development and application of new titanium alloy SP-700[A].In:FUJISHIRO S,EYLON D,KISHI T,ed.Metallurgy and Technology of Practical Titanium Alloys[C].The Minerals,Metals Materials Soceity,1994.37-44.
OUCHI C,FUKAI H,HASEGAWA K.Microstructural characteristics and unique properties obtained by solution treating or aging in β-rich α + β titanium alloy[J].Materials Science and Engineering,1999 (A263):132-136.
FUJITA T,OGAWA A,OUCHI C,et al.Microstructure and properties of titanium alloy produced in the newly developed blended elemental powder metallurgy process[J].Materials Science and Engineering,1996 (A213):148-153.
MEIER M L,MUKHERJEE A K.Superplastic behavior of Ti-6Al-4V and β-enhanced iron-modified Ti-6Al-4V[A].In:FROES F H,CAPLAN I,ed.Titanium' 92:Science and Technology[C].The Minerals,Metals Materials Society,1993.1421-1428.
NAKAJIMA K,TERAO K,MIYATA T.The effect of microstructure on fatigue crack propagation of α + β titanium alloys-in-situ observation of short fatigue crack growth[J].Materials Science and Engineering,1998 (A243):176-181.
{{custom_fnGroup.title_en}}
Footnotes
{{custom_fn.content}}
PDF(745 KB)
({{custom_author.role_en}}), {{javascript:window.custom_author_en_index++;}}
