Ageing Susceptibility of Continuously Annealed Low-Carbon-Steel Strips

Bi, Yunjie1; Ge, Rui2; Yan, Ming3; Xiong, Xiaojing1

2022-08-01

10.3390/met12081285

METALS   Impact Factor & Quartile

2075-4701

The continuously annealed low-carbon-steel strips from industrial production showed an average aging index of about 30 N/mm(2). This increase in yield strength caused by the continuous-annealing process was strongly dependent on the soaking temperature and the soaking time. Whilst the optimization of the overaging parameters and the use of a higher annealing temperature would reduce the ageing susceptibility of low-carbon-steel strips, it was considered unlikely that its magnitude could be reduced to a comparable level to that of the batch-annealed one. Within the limit of low-carbon-strip specifications, there was very little effect of the C content on the ageing. The aging index of the temper-rolled materials decreased with the increase in the temper-rolling reductions, and a maximum increase in yield strength was achieved at a temper-rolling reduction of about 1%. In this work, the effect of C content, Al content, continuous-annealing cycles, and temper-rolling reduction on the ageing susceptibility of the continuously annealed low-carbon-steel strips was examined. SEM/EBSD technique was developed to characterize the temper-rolling strain bands and to assess the effect of temper-rolling reduction on the yield strength of the low-carbon-steel strips.

age hardening EBSD overaging temper rolling

SCI

English

Others

Jihua Laboratory through research project "The development of high strength aluminium alloys and the low cost powder manufacturing technology of titanium alloys for aerospace"[X200171TM200]

Materials Science ; Metallurgy & Metallurgical Engineering

Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000845431900001

MDPI

Web of Science

1.Jihua Lab, Inst Adv Addit Mfg, Foshan 528200, Peoples R China
2.Wuhan Univ Sci & Technol, Sch Mat & Met, Wuhan 430081, Peoples R China
3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Bi, Yunjie,Ge, Rui,Yan, Ming,et al. Ageing Susceptibility of Continuously Annealed Low-Carbon-Steel Strips[J]. METALS,2022,12(8).

Bi, Yunjie,Ge, Rui,Yan, Ming,&Xiong, Xiaojing.(2022).Ageing Susceptibility of Continuously Annealed Low-Carbon-Steel Strips.METALS,12(8).

Bi, Yunjie,et al."Ageing Susceptibility of Continuously Annealed Low-Carbon-Steel Strips".METALS 12.8(2022).