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- W3148962875 abstract "Low carbon steel of 0.12 wt.% C steel cold drawn in 20, 25, 40, and 55% deformations of cold-drawn wires are characterised by brittle fracture when subjected to impact load because the process induces strain hardening. Experiments had been used extensively in industry to find the suitable heat treatment parameters for improved properties. The 0.12 wt.% C steel was heated to the region of austenite and hold for 30 minutes and 40 minutes for comparison, then rapidly cooled SAE 10W-40 engine oil followed by tempering at 400 deg. C. The yield strength of the drawn 25%, 40% and 55% steel reduce. The tensile strength reduces drastically for all the degree of cold-drawn steel. This was as a result of the dissolution of the steel carbon contents into the ferrite phase when heated above the AC1 temperature range and the tendency of the grain to grow due to prolong heating above recrystallisation temperature range. The impact toughness of the samples improves for the treated steel at 30 minutes duration of tempering reduces below the impact toughness of the non-treated steel for treatment at 40 minutes tempering duration for all the cold drawn steel. The toughness is also found to reduce with increasing cold drawn deformation and reduction rate tends to reduce with increasing cold-drawing. This procedure of heat treatment is extensively used for improving the toughness and hardness of the carbon steel. The study demonstrated the possibility of predicting the tensile and yield strength of 0.12 %wt. C steel. The correlation relationship established that the interdependence of the strength and the hardness is more reliable at low tempering duration of 30 minutes compared with the duration at 40 minutes" @default.
- W3148962875 created "2021-04-13" @default.
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- W3148962875 date "2020-09-20" @default.
- W3148962875 modified "2023-09-27" @default.
- W3148962875 title "INFLUENCE OF QUENCHING AND TEMPERING HEAT TREATMENT ON TENSILE PROPERTIES AND TOUGHNESS OF COLD-DRAWN 0.12wt% C STEEL" @default.
- W3148962875 doi "https://doi.org/10.47545/etrj.2020.5.2.061" @default.
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