低温回火对超大形变冷拔珠光体钢丝显微组织和力学性能的影响
冯汉臣1,闵学刚2,魏大圣1,周立初1,崔世云2,方峰1(
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Effect of Low Temperature Annealing on Microstructure and Mechanical Properties of Ultra-Heavy Cold-DrawnPearlitic Steel Wires
Hanchen FENG1,Xuegang MIN2,Dasheng WEI1,Lichu ZHOU1,Shiyun CUI2,Feng FANG1()
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图5. 冷拔钢丝(ε=3.5)经170 ℃回火32 min前后的HRTEM分析
Fig.5. HRTEM analyses of cold-drawn pearlitic steel wires before (a) and after (b) annealing at 170 ℃ for 32 min under ε=3.5 (The ferrite exhibits distinguishable lattice fringes of inset A1, inverse fast Fourier transformation (IFFT) images of the A2 region area shows a disordered structure of cementite, discrete bright spots do not appear from the diffraction of cementite using the fast Fourier transformation (FFT) method. Fig.5b shows the selected area FFT and IFFT images obtained inside the boxed region. d—lattice spacing)
