Uniaxial and biaxial creep-ratcheting behavior of SUS304 stainless steel at room temperature

摘要: Abstract Uniaxial creep-ratcheting tests on SUS304 stainless steel were conducted at room temperature with or without peak stress hold. Remarkable ratchet-strain accumulation was observed in cyclic stressing owing to the viscosity of material. In a positive-stress-ratio condition, rate is determined as function level and total strain present time. negative-stress-ratio affected by strain-hardening memory erasure anisotropic hardening Biaxial mechanical-ratcheting also performed subjecting thin-walled tubular specimens combined constant internal pressure axial straining, which circumferential accumulated an increasing number cycles. The magnitude biaxial ratcheting low rate, given cycles, larger than that high rate.