Oxide particle refinement in Ni-based ODS alloy

被引：53

作者：

Oono, Naoko ^{[1
]}

Tang, Q. X.

Ukai, Shigeharu

机构：

[1] Hokkaido Univ, Grad Sch, Sapporo, Hokkaido 0608628, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2016年 / 649卷

关键词：

Ni-ODS alloy; Oxide particle; Coherency; Lattice misfit; Interface energy; DIFFUSION; HF;

D O I：

10.1016/j.msea.2015.09.094

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The mechanism of oxide particle refinement in a Ni-based ODS alloy is discussed from the point of view of orientation relationship between the oxide particles/Ni matrix. The coherency in Ni-based ODS alloys are confirmed to be size-dependent. Misfit parameter is calculated from the HRTEM analysis. FCC Y2Hf2O7 has better coherency to the FCC Ni matrix than those of YAH and YAG. The mechanism of particle growth is regulated by Ostwald ripening. Both solubility and interfacial energy are important for the particle refinement. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：250 / 253

页数：4

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