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.608 北京科技大学学报 第30卷 3050 (b) 80 120 160 200 200nm 渗碳体颗粒尺寸mm 25 (d) 20 150 40 80 120160200240280 200nm 渗碳体颗粒尺寸/nm 20 e () 15 40 120 200 280 360 200nm 渗碳体颗粒尺寸/mm 图5共析钢在1:应变速率,650℃、形变80%.保温不同时间后的组织形貌.(a)保温30s:(b)保温30s渗碳体尺寸分布统计:()保温1 min;(d)保温lmim渗碳体尺寸分布统计;(e)保温5mim:(f)保温5mim渗碳体尺寸分布统计(图中白色箭头所指为铁素体基体内再析出的 细小渗碳体颗粒) Fig-5 Microstructures of eutectoid steel during deformation by 80%under the strain of 1sat 650C with the subsequent annealing:(a)anneal- ing for 30s:(b)size distribution diagrams of cermentite particles after annealing for 30s:(c)annealing for Imin:(d)size distribution diagrams of cermentite particles after annealing for Imin:(e)annealing for 5min:(f)size distribution diagrams of cermentite particles after annealing for 5min (the white arrow in (e)shows a re precipitated cermentite particle in the ferrite matrix) 3.0 (a) 1.2 2.5 (b) 3.2 (c) 1.0 出 2.029 1.25 2.4 28 0.8 1.5 1.20 1.6 3 0.6 30 1.15 Ma 1.0 0.4 9 0.5 20200250300350400 0.8 0.2 1.19020025030350400 202002503035040 200 400 600 800 200 400 600 800 200 400600 800 温度℃ 温度/℃ 温度/℃ 图6饱和磁化强度随温度的变化曲线.(a)原始组织:(b)冷轧80%组织:(©)700℃、0.1s温变形80%组织 Fig6 Curves of saturation magnetization with temperature for eutectoid steel:(a)initial state:(b)cold rolled by 80%(c)deformation by 80% under a strain rate of 0.1s at 700C图5 共析钢在1s -1应变速率、650℃、形变80%、保温不同时间后的组织形貌.(a) 保温30s;(b)保温30s 渗碳体尺寸分布统计;(c) 保温1 min;(d) 保温1min 渗碳体尺寸分布统计;(e) 保温5min;(f) 保温5min 渗碳体尺寸分布统计(图中白色箭头所指为铁素体基体内再析出的 细小渗碳体颗粒) Fig.5 Microstructures of eutectoid steel during deformation by80% under the strain of1s -1at650℃ with the subsequent annealing:(a) anneal￾ing for30s;(b) size distribution diagrams of cermentite particles after annealing for30s;(c) annealing for1min;(d) size distribution diagrams of cermentite particles after annealing for1min;(e) annealing for5min;(f) size distribution diagrams of cermentite particles after annealing for5min (the white arrow in (e) shows a re-precipitated cermentite particle in the ferrite matrix) 图6 饱和磁化强度随温度的变化曲线.(a) 原始组织;(b) 冷轧80%组织;(c)700℃、0∙1s -1温变形80%组织 Fig.6 Curves of saturation magnetization with temperature for eutectoid steel:(a) initial state;(b) cold rolled by80%;(c) deformation by80% under a strain rate of 0∙1s -1at 700℃ ·608· 北 京 科 技 大 学 学 报 第30卷
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