비조질강의 경도 자기제어에 미치는 합금원소의 영향 = Effect of Alloying Elements on Hardness Self-Control of Non-Heat-Treatable Steels

다국어 초록 (Multilingual Abstract)

Transformation behavior and hardness change were studied in five kinds of self-control steels; standard, high V, modified Ni, W, and high C-Ni steels. In the cooling rates of 10-100oC/min, the primary ferrite and bainite were formed, and the amount of the former increased with decreasing cooling rate. The bainite transformation temperature, Bs, was measured as 570, 560, 590, 575, and 565oC in experimental steels, respectively, which was similar to the calculated temperature. The self-control, that is, the consistency in hardness, was observed, in which the hardness increased with the decrease in Bs. In the case of hot compression testing, the lower temperature deformation led to the enhancement in hardness. (Received March 6, 2017; Revised March 15, 2017; Accepted March 24, 2017)

참고문헌 (Reference)

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