| 两相区加热对Si-Mn系TRIP钢组织和性能的影响 |
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| 引用本文： | 何兵兵,江利,徐银浩,李翠萍,沈青峰.两相区加热对Si-Mn系TRIP钢组织和性能的影响[J].热处理,2011,26(1):16-19. |
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| 作者姓名： | 何兵兵 江利 徐银浩 李翠萍 沈青峰 |
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| 作者单位： | 1. 中国矿业大学材料科学与工程学院,江苏,徐州,221116
2. 上海重型机器厂,上海,200245 |
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| 摘 要： | 研究了两相区加热（奥氏体化）对低碳Si-Mn系TRIP钢组织和性能的影响。试验用钢分别经750℃、780℃、810℃、840℃加热,保温50 min,随后迅速将试样放入420℃的盐浴炉中等温1 h,再油冷至室温,结果得到贝氏体、铁素体、残留奥氏体的三相组织。通过拉伸试验,测得加热温度为810℃时,钢的综合性能Rm×A5达到最大值18 590 MPa.%,断后伸长率也达到最大值22%。在该温度奥氏体化的钢硬度和冲击韧度也达到了较高值。
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| 关 键 词： | 两相区 TRIP钢 性能 组织 |
Effect of Heating in Two-phase Region on Microstructure and Property of Si-Mn TRIP Steel |
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| HE Bing-bing,JIANG Li,XU Yin-hao,LI Cui-ping,SHEN Qing-feng.Effect of Heating in Two-phase Region on Microstructure and Property of Si-Mn TRIP Steel[J].Heat Treatment,2011,26(1):16-19. |
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| Authors: | HE Bing-bing JIANG Li XU Yin-hao LI Cui-ping SHEN Qing-feng |
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| Affiliation: | 1.Collage of Materials Science and Engineering,China University of Mining and Technology,Xuzhou 221116,Jiangsu;2.Shanghai Heavy Machine Plant,Shanghai 200245) |
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| Abstract: | The effect of heating in two-phase region was investigated on the microstructure and properties of low carbon Si-Mn TRIP steel.The trial steel was respectively heated to 750 ℃,780 ℃,810 ℃and 840 ℃ and held for 50 min,subsequently was quickly moved into salt bath at 420 ℃ and held for 1 h,and then oil-cooled to ambient temperature.As a result,the microstructure consisting of bainite,ferrite and retained austenite was obtained.The tensile test results showed that the steel austenitized at 810 ℃ achieved the largest product of multiplying strength by plasticity,i.e.,Rm multiplying A5 equal to 18 590 MPa·% and the largest elongation of 22% as well as higher hardness and impact toughness. |
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| Keywords: | TRIP |
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