| 低碳钢（F＋A）双相组织高温变形时的动态复原机制 |
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| 引用本文： | 汪日志,雷廷权.低碳钢（F＋A）双相组织高温变形时的动态复原机制[J].兵器材料科学与工程,1994,17(1):3-8. |
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| 作者姓名： | 汪日志 雷廷权 |
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| 作者单位： | 哈尔滨工业大学，哈尔滨工业大学金属材料及工艺系 |
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| 摘 要： | 采用压缩试验，研究了普通低碳钢不同组织形貌铁素体加奥氏体（Ｆ＋Ａ）双相组织高温变形过程中的动态复原机制及其特点。试验发现，铁素体相发生动态回复，而奥氏体相则发生动态再结晶。当原始组织中存在Ａ／Ａ晶界时，奥氏体相的动态再结晶机制与通常的大角晶界凸出形核机制相同；而当原始组织中不存在Ａ／Ａ晶界时，奥氏体相的动态再结晶机制则完全改变，动态再结晶核心主要在变形较剧烈的Ｆ／Ａ相界面处形成并向奥氏体晶内长大。相界面的存在对铁素体相的动态回复过程没有明显影响。
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| 关 键 词： | 低碳钢，双相组织，动态回复，动态再结晶 |
DYNAMIC RESTORATION MECHANISM OF A LOW CARBON STEEL DURING HOT DEFORMATION IN (F+A)TOW-PHASE TEMPERATURE RANGE |
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| Wang Rizhi, Lei Tingquan.DYNAMIC RESTORATION MECHANISM OF A LOW CARBON STEEL DURING HOT DEFORMATION IN (F+A)TOW-PHASE TEMPERATURE RANGE[J].Ordnance Material Science and Engineering,1994,17(1):3-8. |
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| Authors: | Wang Rizhi Lei Tingquan |
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| Abstract: | The dynamic restoration mechanism of(F+A) two-phase structures of a low carbon steel has been studied by hotcompression.It is found that dynamic recovery is the sole dynamicrestoration mechanism in ferrite phase,and dynamic recrystallization(DRX) happens in austenite phase. When the A/A grain boundaries exist before deformation,DRX is identical with the nucleationmechanism of grain boundary bulging.When the austenite grainsare enclosed by ferrite phase and no A/A grain boundaries exist before deformation,DRX nucleates on F/A phase boundaries andgrows into austenite grains.The presence of F/A phase boundaries has no apparent effects on the dynamic recovery of ferrite. |
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| Keywords: | low carbon steel dual-phase structure dynamic recovery dynamic recrystallization |
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