Zhang Xiaoyu,Su Ruiping,Ding Yi.Effect of Heat Treatment Process on Mechanical Properties of 21Cr12MoV Martensitic Heat-Resistant Steel[J].Special Steel,
Zhang Xiaoyu,Su Ruiping,Ding Yi.Effect of Heat Treatment Process on Mechanical Properties of 21Cr12MoV Martensitic Heat-Resistant Steel[J].Special Steel,DOI:.
In order to systematically study the effect of quenching and tempering temperature on the mechanical properties of 21Cr12MoV martensitic heat-resistant stainless steel, specimens of the steel were prepared using various heat treatment processes. Subsequently, tensile tests, hardness tests, impact tests, as well as metallographic and fracture surface analyses were conducted. The results show that the tensile and impact properties of the material are optimal when the quenching temperature is 1 050 ℃. The tensile strength is 973 MPa, and the impact energy is 37.6 J. As the tempering temperature increases, the strength and hardness of the material gradually decrease, while the impact toughness gradually increases. To achieve the optimal strength - toughness balance and the best overall performance of the product, the recommended heat treatment process consists of a quenching temperature of 1 050 ℃ and a tempering temperature of 680 ℃.
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