共查询到19条相似文献,搜索用时 140 毫秒
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本文对中碳微合金非调质钢的物理冶金基础和合金成份设计的抉择原则进行较全面和深入的探讨。为国内研制开发中碳微合金非调质钢提供必要的基础理论知识和合金成份的计算确定方法。 相似文献
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Nb-V复合非调质钢奥氏体晶粒长大行为 总被引:1,自引:0,他引:1
研究了一种新型Nb-V复合微合金非调质钢在不同加热温度和保温时间下的奥氏体晶粒长大规律,并与35MnVN非调质钢进行了对比。讨论了微合金元素Nb、V的存在形式及作用机理,并提出了该钢种较合理的加热工艺。试验结果表明,Nb-V复合微合金非调质钢在1280℃和1140℃下,其奥氏体中的Nb、V主要以NbC、VN相形式析出。利用ASTM晶粒度级别等于5.0的临界判据定义Nb-V复合非调质钢奥氏体晶粒长大温度为1150℃,比35MnVN非调质钢粗化温度提高了50℃,表明该钢种在高温加热时具有较好的抗晶粒长大能力,故其开锻前加热温度应控制在1150~1200℃,保温时间30~60min为宜。 相似文献
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非调质N80(F-N80)油井管的开发 总被引:4,自引:2,他引:2
对42MnMo7油井管失效形式进行了分析,提出了非调质钢(F-N80)成分的设计方案。通过工业试验,找出了F-N80的成分范围及轧制方案。 相似文献
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非调质钢在汽车曲轴、连杆锻件上的应用研究 总被引:2,自引:0,他引:2
非调质钢是伴随国际上能源短缺而发展起来的一种高效节能钢,其性价比远优于传统合金结构钢,可广泛用于装备制造业.本文以国内某锻造厂为例,介绍了非调质钢在汽车锻件中的应用,并分析非调质钢锻件的性能要求以及锻造工艺对非调质钢锻件质量的影响,最后对目前非调质钢应用中存在的问题进行了讨论. 相似文献
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Yanzhao LUO Jiongming ZHANG Zhiming LIU Chao XIAO Suzhou WU School of Metallurgical Ecological Engineering University of Science Technology Beijing Beijing China 《金属学报(英文版)》2011,(4):326-334
Based on thermodynamics calculation, the results of the formation temperature of MnS inclusions of non-quenched and tempered steel during heating process were discussed. It is shown that while the solid fraction is 0.9, MnS inclusions began to precipitate in the final stage of solidification. The solidification process of 49MnVS3 non-quenched and tempered steel during heating has been observed in situ using a confocal scanning laser microscope (CSLM), which agrees well with the thermodynamics calculation. MnS particles were coarsening during heating process, which would reduce the pinning effect on the austenite grain boundaries and bring about the sudden growth of some austenite grains in this stage. 相似文献
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利用Gleeble-1500热模拟试验机进行了控轧控冷热模拟试验,分析了非调质CT80连续油管用钢的精轧变形温度、冷却速度和卷取温度对试验钢组织与性能的影响规律。基于控轧控冷热模拟试验结果,设定了试验钢实验室轧制工艺,在终轧温度830℃、冷却速度46℃/s和卷取温度450℃轧制工艺条件下,获得了具有针状铁素体+贝氏体+少量M/A岛组织构成的成品钢板,其屈服强度620 MPa,抗拉强度754 MPa,伸长率29.2%,屈强比0.82,各项性能均满足CT80连续油管用钢力学性能要求。 相似文献
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In this paper, the study group has researched the comprehensive performance and application of the content of sulfur properly.Based on the research such a conclusion can be d non-quenched and tempered steel 12Mn2VBS made of 12Mn2VB by increasing the rawn: 12Mn2VBS the non-quenched and tempered steel has superior comprehensive performance to traditional quenched and tempered steel such as 45 and 40Cr,and it is the best material to manufacture automobile parts. 相似文献