Fatigue life prediction for metal alloys under multiaxial low-cycle block deformation conditions

• Published in: Strength of materials Vol. 43; no. 2; pp. 144 - 153
• Main Authors: Shukaev, S. M., Panasovs’kyi, K. V.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.03.2011; Springer
• Subjects: Alloys; Analysis; Blocking; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Deformation; Equivalence; Exact sciences and technology; Fatigue life; Fracture mechanics (crack, fatigue, damage...); Fundamental areas of phenomenology (including applications); Materials Science; Mathematical models; Mechanical properties; Physics; Solid Mechanics; Specialty metals industry; Structural and continuum mechanics; Titanium; Titanium alloys; Titanium base alloys; Toy industry; low-cycle fatigue; proportional and non-proportional deformation paths; block deformation; damage accumulation model; limiting state criterion; Titanium alloy; Fatigue life; Durability; Experimental study; Multiaxial load; Modeling; Low cycle fatigue; Non proportional load; Stress path; Damaging
• ISSN: 0039-2316; 1573-9325
• DOI: 10.1007/s11223-011-9280-2

The paper summarizes the findings of theoretical and experimental investigations in the range of low-cycle fatigue under irregular multiaxial deformation. It presents the test results for titanium alloys VT9 and VT1-0 under low-cycle regular and block deformation conditions. A method of fatigue life prediction for metal alloys under multiaxial low-cycle block deformation conditions has been elaborated, which is based on the Pisarenko–Lebedev equivalent deformation and the modified Manson–Halford model. The paper demonstrates the advantages of the proposed method over other approaches to the fatigue life prediction for metal alloys under multiaxial block deformation conditions.