Forging And Milling Contribution On Residual Stresses For A Textured Biphasic Titanium Alloy

Journal Article · Mon Jan 17 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3552316· OSTI ID:21510136

Deleuze, C ^[1]; Fabre, A; Barrallier, L ^[1]; Molinas, O ^[2]

---

1. Arts et Metiers ParisTech, MecaSurf, 2, Cours des Arts et Metiers, 13617 Aix en Provence (France)
2. Eurocopter, EQTTL, Aeroport International Marseille France, 13725 Marignane Cedex (France)

Ti-10V-2Fe-3Al is a biphasic titanium alloy ({alpha}+{beta}) used in aeronautical applications for its mechanical properties, such as its yield strength of 1200 MPa and it weighs 40% less than steel. This alloy is particularly useful for vital parts with complex geometry, because of its high forging capability. In order to predict the capability for fatigue lifetime, the designers need to know the residual stresses. X-Ray diffraction is the main experimental technique used to determine residual stresses on the surface. In this case, stress levels are primarily influenced by the complex forging and milling process. On this alloy in particular, it may be difficult to characterize stress due to modification of the microstructure close to the surface. Results obtained by x-ray analysis depend on the correct definition of the shape of the diffraction peaks. The more precisely defined the position of the peak, the more accurately the stresses are evaluated. This paper presents a method to detect if residual stresses can be characterized by x-ray diffraction. The characterization of hardness seems to be a relevant technique to quickly analyze the capability of x-ray diffraction to determine residual stresses.

• OSTI ID: 21510136
• Journal Information: AIP Conference Proceedings, Vol. 1315, Issue 1; Conference: AMPT2010: International conference on advances in materials and processing technologies, Paris (France), 24-27 Oct 2010; Other Information: DOI: 10.1063/1.3552316; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM ALLOYS
HARDNESS
IRON ALLOYS
LIFETIME
MICROSTRUCTURE
MILLING
MODIFICATIONS
PRESSURE RANGE GIGA PA
RESIDUAL STRESSES
STEELS
SURFACES
TERNARY ALLOY SYSTEMS
TEXTURE
TITANIUM ALLOYS
X RADIATION
X-RAY DIFFRACTION
YIELD STRENGTH
ALLOY SYSTEMS
ALLOYS
CARBON ADDITIONS
COHERENT SCATTERING
DIFFRACTION
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
IRON BASE ALLOYS
MACHINING
MECHANICAL PROPERTIES
PRESSURE RANGE
RADIATIONS
SCATTERING
STRESSES
TRANSITION ELEMENT ALLOYS