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本文以铸造中锰钢为例,采用最小二乘法,Gauss 消元法和秦九韶法,通过 C_(10)电子计算机,建立了合金元素与加工硬化(HV)之间的函数关系式。结果表明:用此方法处理中锰钢比其它方法精度高,计算快,计算方程式符合实验规律。从回归曲线可知在试验取值范围内,随着 C、N 含量增加,加工硬化性能提高,随着含 Nb 量增加,加工硬化性能先提高,随后又降低。高密度位错和相变马氏体是产生加工硬化的主要原因。
Taking manganese steel as an example, the functional relationship between alloying elements and work hardening (HV) was established by C_ (10) electronic computer using least square method, Gauss elimination method and Qin Jiushao method. The results show that the method of using this method to treat medium manganese steel is more accurate and faster than other methods, and the calculation equation is in accordance with the experimental rules. From the regression curve, it can be seen that with the increase of C and N, the work hardening property increases with the increase of Nb content, while the work hardening property first increases and then decreases with the increase of C and N contents. High density dislocations and phase transformation martensites are the main cause of work hardening.