The quantitative discrimination between shrinkage and gas microporosity in cast aluminum alloys using spatial data analysis

被引：77

作者：

Anson, JP ^{[1
]}

Gruzleski, JE ^{[1
]}

机构：

[1] McGill Univ, Dept Min & Met Engn, Montreal, PQ H3A 2B2, Canada

来源：

MATERIALS CHARACTERIZATION | 1999年 / 43卷 / 05期

关键词：

D O I：

10.1016/S1044-5803(99)00059-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microporosity in cast aluminum alloys may originate from hydrogen gas evolution, microshrinkage, or a combination of both. A spatial analysis method for the quantitative discrimination between shrinkage and gas porosity is presented and explained. It is shown that shrinkage pores can be selected and. analyzed separately from gas pores by nearest neighbor analysis. The principles of spatial statistics are discussed, and the types of spatial point patterns, complete spatial randomness, and nearest-neighbor cluster analysis are reviewed with respect to microporosity analysis. The pore distribution of a cast Al-7% Si (A356) foundry alloy is used as an example. (C) Elsevier Science Inc., 1999. All rights reserved.

引用

页码：319 / 335

页数：17

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