Preliminary investigation of liquid phase sintering in ferrous systems
Description
Liquid phase sintering was utilized to achieve, by a simple compaction and sintering procedure involving short times and moderate temperatures, a virtually full dense high carbon Fe:C alloy and high boron Fe:B alloy. Parameters such as powder characteristics and mixing, compacting pressure, heating program and the liquid phase fraction were found to influence the sintered density. The response of the Fe:C alloy to a heat treatment is reported along with preliminary experiments in the iron base ternary system Fe:W:C. Residual porosities observed in microstructures of certain liquid phase sintered compacts were accounted for by a proposed capillary flow of the liquid phase and a local densification competing against an overall densification. Some general recommendations are made for liquid phase sintering of powder aggregates. 15 fig., 7 tables
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Additional details
Publishing Information
- Imprint Pagination
- 59 p.
- Report number
- LBL--3549
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 7272632
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BORON ALLOYS; CARBON ADDITIONS; DENSITY; IRON BASE ALLOYS; MICROSTRUCTURE; POROSITY; POWDER METALLURGY; SINTERING; TUNGSTEN ALLOYS
- Descriptors DEC
- ALLOYS; CRYSTAL STRUCTURE; FABRICATION; IRON ALLOYS; METALLURGY; PHYSICAL PROPERTIES; TRANSITION ELEMENT ALLOYS
Optional Information
- Notes
- Thesis. Available from NTIS. $4.50.