Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
권호 표지

Creep Behavior of High Temperature Prestrain in Austenitic 25Cr-20Ni Stainless Steels

오스테나이트계 25Cr-20Ni 스테인리스강의 고온 예변형에 의한 크리프 거동

  • 박인덕 (요코하마국립대학 공학연구원) ;
  • 남기우 (부경대학교 재료공학부) ;
  • 안석환 (부경대학교 기계공학부)
  • Published : 2002.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

In the present study, we examined the influence of prestrain on creep strength of Class M alloy(STS310S) and Class A(STS310J1TB) alloys containing precipitates. Prestrain was given by prior creep at a higher stress than the following creep stresses. Creep behaviour before and after stress change and creep rate of pre-strained specimens were compared with that of virgin specimens. Pre-straining produced the strain region where the strain rate was lower than that of a virgin specimen both for STS310J1TB and STS310S steels. The reason for this phenomenon was ascribable to the viscous motion of dislocations, the interaction between dislocations and precipitates in a STS310J1TB steel, and the interaction of dislocations with sub-boundaries in a STS310S steen which has the higher dislocation density and smaller subgrain size resulted from pre-straining at higher stress.

Keywords

References

  1. TETSU-TO-HAGANE v.81 Effect of Cold-rolling on Creep Behavior of a 10Cr-30Mn Austenitic Steel Baba, E.;Kanemura, O.;Abe, F.;Yagi. K
  2. Creep of Metals and Alloys Evans, R.W.;Wilshire, B.
  3. Trans. ASM v.48 Creep-Rupture Properties of Cold-Worked Type 347 Stainless Steel Grant, N.J.;Bucklin, A.G.;Rowland, W.
  4. Acta Met. v.21 High-Temperature Creep Rate and Dislocation Structure in a Dilute Copper-Aluminum Alloy Hasegawa, T.;Karashima, S.;Ikeuchi, Y. https://doi.org/10.1016/0001-6160(73)90146-6
  5. Scripta Metall v.20 Effects of a Small Prestrain at High Temperatures on the Creep Behavior of AISI 304 Stainless Steel Kikuchi, S.;Ilschner, B. https://doi.org/10.1016/0036-9748(86)90117-1
  6. J. JILM v.30 no.9 Stress Relaxation Behavior of AI-5.5% Mg Alloy Single Crystals with <001>Axis at Elevated Temperature Kikuchi, S.;Tomita, K.;Motoyama, Y.;Adachi, M. https://doi.org/10.2464/jilm.30.480
  7. Challenge to the World of Heat Resistence Steel Masuyama, F.
  8. Proc. 6Th Liege Conf. v.5 Materials for Advanced Power Engineering Masuyama, F.
  9. J. Japan Inst. Metals v.64 Stress Relaxation Behavior of an Austenitic 25Cr-20Ni Stainless Steel in the Range of Power Law Breakdown Park, I.D.;Endo, T. https://doi.org/10.2320/jinstmet1952.64.12_1189
  10. J. Japan Inst. Metals v.64 Creep Behavior Analysis of 25Cr-20Ni Stainless Steels with a Special Reference to Tertiary Creep Park, I.D.;Masuyama, F.;Endo, T. https://doi.org/10.2320/jinstmet1952.64.12_1181
  11. Proc. of 10th Int. Conf. on Strength of Material The Omega Method-An Effective Method for Life and Damage Prediction in Creep Tests and Service Prager, M.
  12. Trans. AIME v.191 Creep and Stress Rupture Behavior of Aluminum as a Function of Purity Servi, I.S.;Grant, N.J.
  13. Trans. AIME v.197 Some Observations on Correlations Between the Creep Behavior and the Resulting Structures in Alpha Solid Solutions Sherby, O.D.;Dorn, J.E.