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首页> 外文会议>International Conference on Processing amp; Manufacturing of Advanced Materials Pt.1; Jul 7-11, 2003; Leganes, Madrid, Spain >Mechanical Property - Microstructure Relations in Iron-carbon alloys from 1.0 to 5.2 carbon
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Mechanical Property - Microstructure Relations in Iron-carbon alloys from 1.0 to 5.2 carbon

机译：力学性能-含碳1.0％至5.2％的铁碳合金的微观结构关系

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摘要

Mechanical property studies of Fe-C alloys, from 1.0 to 5.2 wt.% carbon, became of commercial interest because of their superplastic properties. Optimal superplasticity was achieved with carbon contents in the range of 1.0 to 2.0 wt % carbon. These steels are known as ultrahigh carbon steels (UHCSs). The basis for this success is the creation of a two-phase structure of ultra-fine ferrite grains containing fine iron carbide particles. Similar superplastic behavior is achieved with iron-carbon steels in the carbon range from to 2.1 to 4.2% C (white cast iron and ductile iron) and even up to 5.2% C (iron carbide). A number of commercially viable components were successfully formed. However, high-strain-rate superplasticity could not be achieved in the UHCSs and production of commercial components was postponed. Current studies on UHCS-based materials center on optimizing processing steps for manufacture of strong and tough UHCS products involving modern continuous-casting and metal working procedures. Creation of ultra-fine pearlitc in UHCS by simulated production processing has shown remarkable mechanical properties at ambient temperatures. A divorced eutectoid transformation, coupled with associated deformation (DETWAD), is used to develop fully spheroidized structures of ultra-fine ferrite grains in UHCS. The modern studies on UHCSs has a fascinating relation to the history of ancient Damascus steel and Japanese swords that are known to contain an ultra high amount of carbon.
机译：Fe-C合金的力学性能研究（碳含量为1.0至5.2 wt％）由于其超塑性而引起了商业兴趣。当碳含量在1.0至2.0重量％的碳范围内时，可获得最佳的超塑性。这些钢被称为超高碳钢（UHCS）。成功的基础是创建包含细碳化铁颗粒的超细铁素体晶粒的两相结构。铁碳钢在碳含量范围从2.1％到4.2％C（白口铸铁和球墨铸铁）甚至高达5.2％C（碳化铁）时，都具有类似的超塑性行为。成功地形成了许多商业上可行的组件。但是，UHCS不能实现高应变率超塑性，因此推迟了商业组件的生产。当前对基于UHCS的材料的研究集中在优化加工步骤，以制造涉及现代连续铸造和金属加工程序的强韧UHCS产品。通过模拟生产过程在UHCS中创建超细珠光体，在环境温度下显示出非凡的机械性能。离体的共析相变以及相关的变形（DETWAD）用于开发UHCS中超细铁素体晶粒的完全球化结构。对UHCS的现代研究与古代大马士革钢和日本剑的历史有着令人着迷的关系，这些剑和剑含碳量超高。

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