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首页> 外文会议>International Conference on Materials, Alloys and Experimental Mechanics >Evaluation of Mechanical Properties of Medium Carbon Low Alloy Forged Steels by Polymer Quenching
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Evaluation of Mechanical Properties of Medium Carbon Low Alloy Forged Steels by Polymer Quenching

机译：高分子淬火评价中碳低合金锻造钢力学性能

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摘要

Medium carbon low alloy forged steels were investigated (EN 18, EN 19, EN 24, and EN25) with respect to their mechanical properties by polymer quenching .The effect of polyethylene glycol (PEG) H-(O-CH2-CH2)n-OH as a quenchant was studied by varying polymer concentration (10% and 30%) to investigate the mechanical properties and their metallographic structures. The study was carried out on the medium carbon low alloy forged steels in heat treated condition by hardening in the polymer quenchant. The quenched samples were step tempered at 575°C and at 220°C sequentially for 60 min each. Hardness, tensile strength, Charpy impact strength and metallographic were carried out on the untreated and heat treated specimens. The step tempering process of the specimen gives the high strength with high hardenability. The specimen quenched in the polymer solution exhibited the best mechanical properties, viz., as received samples. The mechanical properties are found increased in the polymer quenchant because of the slow and uniform cooling rate of the polymer. The microstructural examination of the specimens were found to have justified reason for the increment recorded in some of the mechanical properties, as it displayed a high proportion of the martensitic phase.
机译：通过聚合物猝灭研究了中等碳低合金锻造钢（EN 18，EN 19，EN 24和EN25）。聚乙二醇（PEG）H-（O-CH2-CH2）N-的作用通过不同的聚合物浓度（10％和30％）研究了猝灭剂以研究机械性能及其金相结构。通过在聚合物淬火剂中硬化，在热处理条件下进行该研究在热处理条件下进行。将淬火样品在575℃下依次在575℃和220℃下进行温度60分钟。在未处理和热处理的样品上进行硬度，拉伸强度，夏比冲击强度和金相。试样的阶跃回火过程具有高淬透性的高强度。在聚合物溶液中淬灭的标本表现出最佳的机械性能，即作为所接受的样品。由于聚合物的缓慢和均匀的冷却速率，聚合物淬火剂中发现机械性能增加。发现样本的微观结构检查具有在一些机械性能中记录的增量的合理原因，因为它显示出高比例的马氏体相。

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