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研究了几种合金元素对双相钢时效行为的影响,结果表明:时效过程中,合金元素扩散极为有限;超过70℃时效后拉伸曲线上将出现不连续屈服,出现不连续屈服的时间与所含合金元素的品种有关。计算表明,含 Al,si,Mn,Cr 合金元素的双相钢时效激活能均大于 C、N在铁素体中的扩散激活能,说明时效过程不仅与 C、N 原子在铁素体中的扩散有关,而且和位错的交互作用有关。
The effects of several alloying elements on the aging behavior of duplex steel were studied. The results show that the diffusion of alloying elements is very limited during the aging process. The discontinuous yield will appear on the tensile curve above 70 ℃, and the discontinuous yielding time and Alloying elements contained in the species. Calculations show that the aging activation energy of duplex steel containing Al, Si, Mn and Cr alloying elements is greater than that of C and N diffusion in ferrite, indicating that the aging process not only with the C, N atoms in the ferrite Diffusion-related, and dislocation interaction.