Quenching residual stresses in T-section 7050 aluminum alloy forging

Distribution of quenching residual stresses in T-section 7050 aluminum alloy forging was obtained using a combination method of finite element method (FEM), contour method, layer removal method and X-ray diffraction. The results show that, experimental results and FEM result of internal residual str...

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Bibliographic Details
Published inMechanika (Kaunas, Lithuania : 1995) Vol. 23; no. 3; p. 353
Main Authors Hai, Gong, Yunxin, Wu, Tao, Zhang, Yaoqiong, Liu, Chen, Li, Hao, Ji, Shouhua, Yi, Minghui, Cao, Feng, Xiao
Format Journal Article
LanguageEnglish
Published Kaunas Kauno Technologijos Universitetas 01.05.2017
Subjects
Aluminum alloys
Aluminum base alloys
Compressive properties
Contours
Fatigue life
Finite element method
Forging
Machining
Measurement
Mechanical properties
Methods
Production processes
Quenching
Residual stress
Residual stresses
Shape
Stress analysis (Engineering)
Stress concentration
T section
Testing
X-ray diffraction
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Summary:Distribution of quenching residual stresses in T-section 7050 aluminum alloy forging was obtained using a combination method of finite element method (FEM), contour method, layer removal method and X-ray diffraction. The results show that, experimental results and FEM result of internal residual stresses are in good agreement. While surface stresses obtained by layer removal method and contour method are slightly different with X-ray diffraction and FEM results, thus X-ray diffraction measurement of surface stresses must be taken into consideration to fully understand the distribution of quenching stresses in the T-section 7050 aluminum alloy forging. Moreover, surface residual stresses are compressive of about -150MPa, while residual stresses in the core are tensile with a maximum up to 210MPa, which is very harmful for the subsequent machining.
ISSN:1392-1207
2029-6983
DOI:10.5755/j01.mech.23.3.14259