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| 1 | 国内外热作模具钢的研究进展显示文摘介绍了国内外传统和新型热锻、热挤压和压铸用热作模具,以及特殊用途热作模具的钢种和特点;热作模具钢热处理和表面处理技术的研究进展。提高模具钢纯净度、均匀和细化组织,用计算机模拟技术开发热作模具钢新钢种是目前提高热作模具钢寿命的重要方法。 | 李勇 左秀荣 陈蕴博 王淼辉 赵新 | 2010 | 特殊钢2010，31，3： | 22 |
| 2 | 预处理工艺对热作模具钢5Cr8MoNi2SiV组织与硬度的影响显示文摘研究了一种新型热作模具钢5Cr8Mo Ni2Si V的热力学相变规律和CCT曲线,为改善该钢铸态组织的严重偏析和提高材料切削性能,分析普通常规退火、正火+球化退火和正火+等温球化退火3种预处理工艺对该钢组织和性能的影响。结果表明:试验钢经1090℃×1 h正火+880℃×2 h+680℃×48 h等温球化预处理,能显著改善碳化物偏析,并使硬度大大降低,改善切削性能。 | 赵成志 金天文 符策鹄 张贺新 周佩超 | 2016 | 金属热处理2016，41，1： | 8 |
| 3 | 基于人工神经网络的P20钢热处理工艺显示文摘用BP人工神经网络及材料微观分析方法研究了热处理工艺对P20钢硬度的影响。结果表明,BP网络能根据淬火及回火温度精确预测P20钢热处理后的硬度;BP网络预测结果表明,P20钢经800~920℃淬火及530~650℃回火,在给定的淬火温度下,随回火温度的增加硬度急剧降低;在给定的回火温度下,随淬火温度的增加硬度略有增加。材料微观分析表明:这主要归因于回火温度升高造成的碳化物长大和α相的回复程度的加剧及淬火温度升高造成的碳及合金元素固溶量的增加。 | 左秀荣 陈蕴博 王淼辉 李勇 | 2010 | 材料热处理学报2010，31，4： | 6 |
| 4 | 热锻模具钢的耐磨性及磨损机理研究显示文摘采用销盘式高温摩擦磨损实验机,针对一种新型铸钢、H13和H21钢在25-400℃下进行磨损试验,对比研究各种钢的耐磨性,并探讨了磨损机制.研究表明:室温下H21钢由于具有较多的未溶碳化物,比H13钢和铸钢具有高的耐磨性;在200-300℃下铸钢和H13钢随载荷的增加一直具有较低的磨损率和增长率,而H21钢当载荷达到200 N时磨损率忽然升高;在400℃下铸钢具有持续低的磨损率,明显低于H21和H13钢.可见,新型铸钢具有比常用热锻模具钢显著高的高温耐磨性. | 王树奇 朱韬 茅奕苏 | 2012 | 材料科学与工艺2012，20，2： | 6 |
| 5 | Selection of Heat Treatment Process and Wear Mechanism of High Wear Resistant Cast Hot-Forging Die Steel显示文摘Dry sliding wear tests of a Cr-Mo-V cast hot-forging die steel was carried out within a load range of 50-300 N at 400 ℃ by a pin-on-disc high-temperature wear machine. The effect of heat treatment process on wear resistance was systematically studied in order to select heat treatment processes of the steel with high wear resistance. The morphology, structure and composition were analyzed using scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS); wear mechanism was also discussed. Tribo-oxide layer was found to form on worn surfaces to reduce wear under low loads, but appear inside the matrix to increase wear under high loads. The tribo-oxides were mainly consisted of Fe3O4 and Fe2O3, FeO only appeared under a high load. Oxidative mild wear, transition of mild-severe wear in oxidative wear and extrusive wear took turns to operate with increasing the load. The wear resistance strongly depended on the selection of heat treatment processes or microstructures. It was found that bainite presented a better wear resistance than martensite plus bainite duplex structure, martensite structure was of the poorest wear resistance. The wear resistance increased with increasing austenizing temperature in the range of 920 to 1 120 ℃, then decreased at up to 1 220 ℃. As for tempering temperature and microstructure, the wear resistance increased in following order: 700 ℃ (tempered sorbite), 200 ℃ (tempered martensite), 440 to 650 ℃ (tempered troostite). An appropriate combination of hardness, toughness, microstructural thermal stability was required for a good wear resistance in high-temperature wear. The optimized heat treatment process was suggested for the cast hot-forging steel to be austenized at 1 020 to 1 120 ℃, quenched in oil, then tempered at 440 to 650 ℃ for 2 h. | WEI Min-xian WANG Shu-qi WANG Lan CUI Xiang-hong CHEN Kang-min | 2012 | Journal of Iron and Steel Research(International)2012，19，5： | 6 |
| 6 | Influence of Normal Load,Sliding Speed and Ambient Temperature on Wear Resistance of ZG42CrMo显示文摘To investigate the wear resistance of ZG42CrMo in industrial application,the wear behaviors under different normal loads,sliding speeds and ambient temperatures were simulated by an MMU-5G abrasion tester to acquire the friction coefficients and wear rates,with the morphology of worn surface observed by scanning electron microscopy(SEM) and chemical composition of worn surface and debris analyzed by X-ray energy dispersive spectroscopy(EDS).Combine with the theory of tribology,finally the regular of environmental factors' influence on material wear behaviors is determined.The results show that the increase of load decreases wear resistance significantly,when the pressure reaches a certain extent,severe spalling occurs on the worn surface;the changes of speed result in the changes of size of abrasive debris,and then effect the wear behaviors,in the increasing process of speed,the wear rate increases firstly and then decreases;the rise of temperature causes changes in wear mechanism,bring forth oxidation film on the worn surface,which leads to significant improvement of the wear resistance of materials under high temperature compared to that under low temperature. | ZHANG Jian | 2012 | Journal of Iron and Steel Research(International)2012，19，4： | 4 |
| 7 | 热处理工艺调控9CrV钢显微组织及力学性能显示文摘针对大尺寸液压破碎锤活塞用9CrV钢,研究分析了热处理工艺对其显微组织及力学性能的影响。结果表明,经840℃淬火和300℃回火后,9CrV钢的组织为回火马氏体、粒状碳化物和残留奥氏体,其硬度为56.7 HRC,冲击吸收能量为4.66 J。随淬火温度降低至800℃,回火温度提高至400℃,9CrV钢的硬度降低至49.8 HRC,降幅近12.2%,而冲击吸收能量提高至8.98 J,增幅达92.7%。这是由于降低淬火温度后未溶碳化物数量增多,一方面细化了组织,另一方面形成淬火后马氏体的含碳量降低,两者均为提高淬火组织的强韧性提供了基础。适当提高回火温度,组织由回火马氏体转变为回火屈氏体。通过淬火与回火工艺的综合调控,可有效提高9CrV钢的抗冲击能力。 | 王磊 路昊青 张宝燕 刘杨 宋秀 李永胜 | 2021 | 材料热处理学报2021，42，11： | 4 |
| 8 | 钨对热锻模具钢一次碳化物形貌及冲击性能的影响显示文摘在传统Cr-Mo-V系马氏体型热作模具钢基础上,研究了不同W含量对热锻模具钢的一次碳化物形貌以及冲击性能的影响。结果表明,随着W含量的上升,钢中一次碳化物数量增多,一次碳化物类型逐渐由M_2C型转变为M_6C型,形貌由圆度较大、带有尖角的不规则形状逐渐转变为球状;不同W含量的试验钢回火二次硬化峰温度都为510℃,峰值硬度相差不大,均在58 HRC左右,比通用型H13高5 HRC;随着W含量的升高,试验钢冲击吸收能量先上升后下降,W含量在2%附近时,冲击吸收能量最大。 | 金欣 周健 迟宏宵 马党参 | 2018 | 金属热处理2018，43，3： | 3 |
| 9 | Analysis of Wear Mechanism and Influence Factors of Drum Segment of Hot Rolling Coiler显示文摘Because the work environment of segment is complex, and the wear failures usually happen, the wear mechanism corresponding to the load is a key factor for the solution of this problem. At present, many researchers have investigated the failure of segment, but have not taken into account the compositive influences of matching and coiling process. To investigate the wear failure of the drum segment of the hot rolling coiler, the MMU-5G abrasion tester is applied to simulate the wear behavior under different temperatures, different loads and different stages, and the friction coefficients and wear rates are acquired. Scanning electron microscopy(SEM) is used to observe the micro-morphology of worn surface, X-ray energy dispersive spectroscopy(EDS) is used to analyze the chemical composition of worn surface, finally the wear mechanism of segment in working process is judged and the influence regulars of the environmental factors on the material wear behaviors are found. The test and analysis results show that under certain load, the wear of the segment changes into oxidation wear from abrasive wear step by step with the temperature increases, and the wear degree reduces; under certain temperature, the main wear mechanism of segment changes into spalling wear from abrasive wear with the load increases, and the wear degree slightly increases. The proposed research provides a theoretical foundation and a practical reference for optimizing the wear behavior and extending the working life of segment. | ZHANG Jian PENG Yan LIU Hongmin LIU Yunfei | 2013 | Chinese Journal of Mechanical Engineering2013，26，2： | 0 |
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