Positron annihilation studies of high-manganese steel deformed by rolling

Nukleonika

Wróbel Mirosław¹  Dryzek Ewa²  Sarnek Maciej² 

[1] AGH University of Science and Technology, 30 Mickiewicza Ave., 90-059 Kraków, Poland;Institute of Nuclear Physics of the Polish Academy of Sciences, 152 Radzikowskiego Str., 31-342 Kraków, Poland, Tel.: [phone], Fax: [phone];

关键词: plastic deformation;    positron annihilation;    high manganese steel;   

DOI  :  10.1515/nuka-2015-0126

来源: DOAJ

【 摘 要 】

Positron annihilation spectroscopy (PAS) has been used to study the annealing behavior of cold rolled Fe – 21 wt% Mn steel with 0.05 wt% C. After the initial annealing of defects shown by Doppler broadening of the annihilation line, a slight increase in the annihilation line shape parameter, i.e., the so-called S parameter and then its decrease in the temperature range between 225°C and 450°C indicates generation of new defects and their subsequent annealing. This temperature range coincides with X-ray diffraction measurements, which indicate reversion of deformation-induced ε-martensite. However, for annealing in this temperature range with slow cooling of the sample, the formation of ferrite already starts. The results are compared with our previous results for deformed austenitic stainless steel 1.4301 (EN) where only reversion of deformation-induced α′-martensite was detected.

【 授权许可】

Unknown