The Influence of Solidification Condition to the Aluminum Wire Organization Characteristics

Abstract:

Electrical wiring is the main fireorigin on electrical fire, and aluminum wire laying lines used more fire hazard. The melting mark formed in process of fire is the important material evidence to analysis the cause, but the aluminum wire melting mark organization feature is also different in different solidification conditions, therefore, to identify the mark characteristics formaed in different environment conditions has become a important task of fire evidence identification. Prepared fire sample melting by the means of simulation test, and observed to analysis the experimental sample, then summarizes the influence of solidification environment on microstructure characteristics of aluminum wire trace sample. Through the analysis found that, because of the influence of subcooled temperature, make the most of the organization of melt mark cooled in the air have oversize equiaxial crystal organization, almost no holes; and the dip in water cooling of melting mark is formed in larger subcooling, so the organization have more than a small columnar crystal and cellular crystal, and have more small holes exist. These features of aluminum conductor mark can provide strong technical support for fire investigation.

• Periodical: Advanced Materials Research (Volume 421)
• Pages: 110-113
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.421.110
• Online since: December 2011
• Authors: Lian Tie Wang, Da Wei Xia, Da Zhi E, Qing Shan Meng, Xiao Li Sheng
• Keywords: Air-Cooling, Existing Keywords Aluminum Wire, Fire, Hole, Organisation, Solidification, Water-Cooling

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