Conference proceeding
Strength anisotropy in a cold-compacted low alloy steel powder
PM2TEC 2005: 2005 International Conference on Powder Metallurgy & Particulate Materials; Montreal, Quebec; Canada; 19-23 June 2005, pp 281-295
19 Jun 2005
Abstract
Currently used models for cold compaction of ductile powders consider strength as a function of density alone. However, a number of studies have shown that strength is dependent on other variables besides density, including the stress path used for consolidation. Fleck's model (1995) offers the first approach to understanding the origin of this path dependence and identifies the orientational anisotropy of deformation at interparticle contacts as the origin of this behavior in ductile powders. Assuming this assertion is correct, in addition to path dependence, powder compacts produced by non-isostatic stress paths also should exhibit anisotropic strength. Evidence documenting strength anisotropy in a closed die cold-compacted low alloy steel powder (Distaloy AE) will be presented. Evidence is provided primarily from tensile strength testing and SEM fracture surface analysis. Data concerning post-sintering strength anisotropy will also be presented.
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Details
- Title
- Strength anisotropy in a cold-compacted low alloy steel powder
- Creators
- Steven Galen - Merck and Company, Inc. (United States, West Point)Antonios Zavaliangos - Drexel University, Materials Science and Engineering
- Publication Details
- PM2TEC 2005: 2005 International Conference on Powder Metallurgy & Particulate Materials; Montreal, Quebec; Canada; 19-23 June 2005, pp 281-295
- Conference
- PM2TEC 2005: 2005 International Conference on Powder Metallurgy & Particulate Materials (Montreal, Quebec; Canada, 19 Jun 2005–23 Jun 2005)
- Number of pages
- 15
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Scopus ID
- 2-s2.0-84867945340
- Other Identifier
- 991019174911204721