High Pressure Torsion of Rail Steels

机译：轨道钢的高压扭转

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To study the influence of shear deformation on the evolution of the microstructure and the mechanical strength in rail steels, three steels with different microstructure (two pearlitic, one bainitic) were deformed by High Pressure Torsion (HPT). In order to evaluate in addition the effect of the strain path, a cyclic form of HPT was applied. The mechanical strength was determined by means of in-situ measurement of the flow stress and microhardness measurements. The differences of the mechanical strengths between the monotonic and cyclic deformed samples clearly indicate that a monotonic deformation promotes higher dislocation densities and leads to the assumption that dissolution of the cementite takes place more pronounced.

机译：为了研究剪切变形对钢轨钢的组织演变和机械强度的影响，通过高压扭转（HPT）变形了三种不同组织的钢（两种珠光体，一种贝氏体）。为了另外评估应变路径的影响，应用了循环形式的HPT。机械强度通过流动应力的原位测量和显微硬度测量来确定。单调和循环变形样品之间的机械强度差异清楚地表明，单调变形会促进较高的位错密度，并导致渗碳体的溶解更加明显的假设。

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来源
《International Conference on Nanomaterials by Severe Plastic Deformation(NanoSPD3); 20050922-26; Fukuoka(JP)》|2005年|P.455-460|共6页
会议地点 Fukuoka(JP)
作者
F. Wetscher; B. Tian; R. Stock; R.Pippan;
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作者单位

Erich Schmid Institute of Material Sciences, Austrian Academy of Sciences, Jahnstrasse 12, A-8700 Leoben, Austria;

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原文格式 PDF
正文语种 eng
中图分类塑料;
关键词
high pressure torsion; severe plastic deformation; steel; cyclic deformation;

机译：高压扭转;严重塑性变形;钢;循环变形;

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专利

1. Effect of the Initial State of a Low-Carbon Steel on Nanostructure Formation during High-Pressure Torsion at High Strains and Pressures [J] . S. V. Dobatkin, S. V. Shagalina, O. I. Sleptsov Russian Metallurgy(Metally) . 2006,第5期

机译：低碳钢的初始状态对高应变和高压下高压扭转过程中纳米结构形成的影响
2. Assessing the impact of small amounts of water and iron oxides on adhesion in the wheel/rail interface using High Pressure Torsion testing [J] . Buckley-Johnstone L. E., Trummer G., Voltr P., Tribology International . 2019,第期

机译：使用高压扭转测试评估少量水和氧化氧化物对车轮/轨道界面粘附的影响
3. Evaluation of local strength via microstructural quantification in a pearlitic rail steel deformed by simultaneous compression and torsion [J] . Dimitrios Nikas, Xiaodan Zhang, Johan Ahlström Materials Science and Engineering . 2018,第NOVa8期

机译：通过同时压缩和扭转变形的珠光体钢的显微组织定量评估局部强度
4. Changes in the Fracture Toughness of a Rail Steel Subjected to High Pressure Torsion [C] . A. Hohenwarter, R. Stock, R. Pippan International Conference on Fracture . 2009

机译：高压扭转轨道钢断裂韧性的变化
5. SIMULTANEOUS KNUDSEN- AND TORSION-EFFUSION MEASUREMENTS OF THE VAPOR PRESSURES OF TRIPHENYL ALUMINUM AND TRIPHENYL BORON. [D] . GOVORCHIN, STEVEN WAYNE. 1986

机译：三苯甲基铝和三苯硼的蒸气压的同时KNUDSEN和扭转屈服测量。
6. Effects of the Tempering and High-Pressure Torsion Temperatures on Microstructure of Ferritic/Martensitic Steel Grade 91 [O] . Artur Ganeev, Marina Nikitina, Vil Sitdikov, 2018

机译：回火和高压扭转温度对91级铁素体/马氏体钢组织的影响
7. Endurance and other properties of rail steel. Part I. Endurance properties of rail steel. Part II. Comparative tests of rail steel cast in standard molds and sink-head molds of the Gathmann type. [O] . J.R. Freeman, W.J. Barry, R.L. Dowdell 1928

机译：轨钢的耐力等特性。第I部分。铁钢的耐久性。第二部分。 Gathmann型标准模具和水槽模具中轨钢铸造的比较试验。

High Pressure Torsion of Rail Steels

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