Abstract:Prestressed Concrete (PC) steel bars made of 30MnSi are widely used in various prestressed components. This paper compared the hot-rolled, cold-drawn, quenched and tempered samples of PC steel bars, observed the microstructure evolution and hardness changes of steel bars in various processes, and studied the austenitizing process and mechanical properties at different quenching temperatures. The results show that there is a small amount of residual ribbon ferrite in the tempered microstructure, and the hardnes… Show more
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