| 重载齿轮钢的高温性能 |
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| 引用本文： | 张国强,董瀚,王毛球,赵亚平,刘荣佩.重载齿轮钢的高温性能[J].钢铁,2009,44(5):59-0. |
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| 作者姓名： | 张国强 董瀚 王毛球 赵亚平 刘荣佩 |
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| 作者单位： | 1.昆明理工大学材料与冶金工程学院， 云南 昆明 650093；2.钢铁研究总院先进钢铁 材料技术国家工程研究中心，北京 100081；3.宝山钢铁股份有限公司特殊钢分公司， 上海 200940 |
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| 摘 要： | 通过Gleeble 1500D热模拟试验机高温拉伸试验，对比研究了17Cr2Ni2MoVNb和17Cr2Ni2Mo钢的高温性能。结果表明：因微合金元素V（0.1%，质量分数，下同）、Nb（0.036%）产生细晶强化及固溶强化，17Cr2Ni2MoVNb 钢的抗拉强度比17Cr2Ni2Mo钢稍高。在低N（0.0057%）含量的17Cr2Ni2MoVNb钢中，V和Nb对热塑性的危害很小。而高N（0.0130%）含量的17Cr2Ni2Mo钢在600～900 ℃及1050～1200 ℃温度区间塑性低于17Cr2Ni2MoVNb钢。N含量及相变温度不同导致第二期AlN析出量不同及铁素体先后析出，是造成两试验钢塑性差别的主要原因。
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| 关 键 词： | 重载齿轮钢 热塑性 断裂 第二相 铁素体 |
Study on High Temperature Properties of Heavy-Duty Gear Steels |
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| ZHANG Guo-qiang,DONG Han,WANG Mao-qiu,ZHAO Ya-ping,LIU Rong-pei.Study on High Temperature Properties of Heavy-Duty Gear Steels[J].Iron & Steel,2009,44(5):59-0. |
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| Authors: | ZHANG Guo-qiang DONG Han WANG Mao-qiu ZHAO Ya-ping LIU Rong-pei |
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| Affiliation: | 1.Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China;2.National Engineering Research Center of Advanced Steel Technology, Central Iron and Steel Research Institute, Beijing 100081, China;3.Special Steel Branch, Baoshan Iron and Steel Co., Ltd., Shanghai 200940, China |
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| Abstract: | Hot ductility of 17Cr2Ni2MoVNb and 17Cr2Ni2Mo gear steels at the temperature from 600 to 1200 ℃ was measured on stress/strain thermo simulator Gleeble 1500D and the mechanism of crack propagation was studied. The results show that the tensile strength of the V（0.1%） and Nb（0.036%） microalloyed 17Cr2Ni2MoVNb steel was higher than that of the 17Cr2Ni2Mo steel, since microalloying elements can result in grain refinement strengthening and solution strengthening. Meanwhile, V and Nb are not detrimental to the ductility of the low N（00057%）containing steel. However, hot ductility of the 17Cr2Ni2Mo steel which contains higher N (0.0130%) was below that of the 17Cr2Ni2MoVNb steel in the test temperature range of 600 900 ℃and 1050 1200 ℃. The differences in N content and in temperature for phases transformation result in the distinction for precipitation of AlN and α ferrite between 17Cr2Ni2MoVNb and 17Cr2Ni2Mo, which in turn influence the hot ductility. |
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| Keywords: | heavy duty gear steel hot ductility fracture secondary phase α ferrite |
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