Transformation Strain and Texture Evolution during Diffusional Phase Transformation of Low Alloy Steels Studied by Neutron Diffraction
The ferrite-to-austenite transformation during heating and the austenite-to-ferrite transformation during cooling were in situ investigated by KEK/SIRIUS and LANSCE/HIPPO neutron diffractometers under the stress-free condition. The deviation of ferrite lattice parameter from the linear thermal expansion and contraction during heating and cooling suggested the compressive strain occurred in ferrite phase. The texture memory effect between the cold compressed texture of initial martensite and the final texture of ferrite after α→γ→αphase transformation was interrupted by the static recrystallization of martensite during step-by-step heating, revealing that the occurrence of texture memory effect was related to the transformation strain and the strong variant selection for nucleation.
P.G.Xu Y.Tomota T.Suzuki T.Kamiyama S.C.Vogel
Quantum Beam Science Directorate, Japan Atomic Energy Agency, Ibaraki, 319-1195, Japan Graduate Scho Graduate School of Science and Engineering, Ibaraki University, Ibaraki, 316-8511, Japan Institute of Materials Structure Science, High Energy Accelerator Research Organization, Japan Los Alamos Neutron Science Center, Los Alamos National Laboratory, NM 87545, USA
国际会议
桂林
英文
1-6
2010-11-16（万方平台首次上网日期，不代表论文的发表时间）