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本文测量了宝山钢铁公司生产的340MPa级烘烤硬比（BH）钢（汽车钢）供货态及其BH态试样的内耗；研究了预变形2％后，分别在100，170和250℃时效不同时间试洋的内耗谱与VBH的关系，结果表明：在Snoek峰发生下降甚至几乎消失的同时，100℃处理引起SKK峰低温支隆起或隐现有峰，170℃处理引起SKK峰高度与钢的VBH值上升，250℃处理引起VBH值增大，但使SKK峰降低并向低温移动等用内耗法给出了钢晶格中的固溶C含量。
In this paper, the internal friction of 340MPa bake hard ratio (BH) steel (automotive steel) produced by Baoshan Iron and Steel Co., Ltd. and its BH sample was measured. After pre-deformation of 2% The results showed that at the same time as Snoek peak decreased or almost disappeared, the treatment of 100 ℃ caused the SKK peak to rise or disappear, and the peak height of SKK peaked at 170 ℃ The VBH value increased, the VBH value increased at 250 ℃, but the SKK peak decreased and moved to the low temperature. The content of dissolved C in the steel lattice was given by the internal friction method.