Özet:

AISI 4140 steel is widely used in the steel manufacturing industry. The heating processing results in the fact that its mechanical characteristics can be optimized as desired. In this study, industrial cryogenic processing was applied to the AISI 4140 steel in different periods and the impact of heat processing parameters on stretching behaviors, shock resistance and drawing resistance was studied. In cryogenic thermal processes, three different waiting times were used. After the cryogenic process, the only temperation process was implemented. Furthermore, stretching tests were performed at three different strengths (5 N, 10 N and 15N) at a fixed sliding speed (3.16 m/s) and at three different sliding distances (95 m, 190 m, 285 m). Experimental studies have found that the cryogenic processing parameters significantly affect the mechanical characteristics of the AISI 4140 steel. Cryogenic processing has been shown to have a positive impact on many mechanical characteristics, including the primary extinction of low waiting times in thermal processing. Compared to the general cryogenic processing (long waiting period), the industrial cryogenic processing (short waiting period) has been observed to have a lower impact on mechanical characteristics. It is clearly proven that the study has shown a linear parallel with similar studies in literature [6, 7, 9, 10, 11]. The best mechanical characteristics and stretching resistance were obtained in the longest waiting period sample. The . The mechanical characteristics of the AISI 4140 steel can be optimized by controlling the cryogenic thermal processing parameters.

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