Control of Nanostructues in Ultrahigh-Strength Steels.

机译：超高强度钢中纳米结构的控制。

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The development of fine-scale multicomponent M2C carbides in AF1410 steel was observed as a function of time at the standard tempering temperature of 510C. Strong departures from equilibrium compositions are observed at early stages of precipitation, and carbide composition appears to be particle size dependent in a given microstructure. Analysis of the carbide composition trajectory during precipitation in terms of the thermodynamic contributions of coherency and capillarity indicates initial nucleation at compositions of reduced interfacial energy but reduced chemical driving force. The ability of multicomponent carbides to follow a precipitation composition trajectory of increasing interfacial energy and increasing driving force appears important to the maintenance of a fine particle size and high number density at late stages of precipitation for overaging resistance. Preliminary evidence is also found for predicted nonuniformity of the matrix composition in the stress field of a coherent particle.

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作者
Olson, G. B.;
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年度 1990
页码 1-22
总页数 22
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Capillarity; Chemicals; Coherence; Composition(Property); Energy; Force(Mechanics); High density; Interfaces; Matrix materials; Microstructure; Nucleation; Particle size; Particles; Precipitation; Reduction; Stresses; Temperature; Tempering; Nanostructures; M2C Carbide; Carbon steels; High strength alloys; Nonequilibrium composition; Interfacial energy; Coherency strain energy; High strength;

机译：毛细管;化学品;相干性;组成（性质）;能量;力（力学）;高密度;界面;基质材料;微观结构;成核;粒径;颗粒;沉淀;还原;应力;温度;回火;纳米结构; m2C碳化物;碳钢;高强度合金;非平衡组成;界面能;相干应变能;高强度;

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Control of Nanostructues in Ultrahigh-Strength Steels.

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