Precipitation hardening in metals
Precipitation hardening in metals
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DOI：
10.1179/026708399773002782
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发表时间：
1999-01-01
影响因子：
1.8
通讯作者：
Gladman, T
中科院分区：
文献类型：
--
作者：
Gladman, T
沉淀硬化长期以来一直用于提高商业合金的强度，例如调质钢和硬铝型铝合金。沉淀硬化的理论处理被简要地考虑。提出了“硬”不变形颗粒和“软”变形颗粒强化的方程，并讨论了其意义。这些导致了对于给定系统的最佳粒度的概念，但是最佳粒度可以根据颗粒特性从系统到系统而变化。一个广泛的比较之间的增量，由于在商业合金中的沉淀和理论的预测发生的强度，这些增量的重要贡献的强度示出来自沉淀颗粒的体积分数的变化，可以采用在各种系统。MST/4157。
Precipitation hardening has long been used to increase the strength of commercial alloys, such as quenched and tempered steels and the duralumin type aluminium alloys. The theoretical treatments of precipitation hardening are briefly considered. The equations for strengthening by 'hard' indeformable particles and by 'soft' deformable particles are presented, and the implications are discussed. These lead to the concept of an optimum particle size for a given system, but the optimum can vary from system to system depending upon the particle characteristics. A broad comparison is made between the increments in strength that occur due to precipitation in commercial alloys and the predictions of the theories; an important contribution to these increments in strength is shown to derive from variations in the volume fraction of precipitated particles that can be employed in the various systems. MST/4157.