|Table of Contents|

Influence of Heat-treatment on Interface of AZ31B/7075 Explosive Composite Plates

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2010年05期
Page:
702-707
Research Field:
Publishing date:

Info

Title:
Influence of Heat-treatment on Interface of AZ31B/7075 Explosive Composite Plates
Author(s):
YAN Yin-biao1SHEN Xiao-ping1WANG Jin-hua2LIU Jin-qiang1ZHANG Li-kui1
1.School of Materials Science and Engineering,NUST,Nanjing 210094,China;2.Ningbo Branch,China Academy of Ordnance Science,Ningbo 315103,China
Keywords:
composite interfaces explosive composites diffusion layers heat-treatment aluminum alloy magnesium alloy
PACS:
TB331
DOI:
-
Abstract:
AZ31B/7075 explosive composite plates are heated at 300~400 ℃.The microstructure,elemental distribution and shear strength of the composite plates are studied by using optical microscope,energy dispersive X-ray microanalysis spectrometer attached to scanning electron microscope and mechanical properties testing machine.The interface changes after the heat-treatment is discussed.The results show that: the recrystallization occurrs and the grain grows in interface zones,the explosive characteristics completely disappeares,the magnesium and aluminum inter-diffusion layer is formed as the heating temperature and holding time prolong.The structures of the inter-diffusion layers change from the Mg-based solid solution-Al solid solution to Mg-based solid solution-Al3Mg2-Al solid solution and Mg-based solid solution-Al3Mg2-Al12Mg17-Al solid solution;the diffusion layer thickness increase as the intermetallic compound layer increases in thickness;the interface shear strength reduces due to the formation of intermetallic compounds in the diffusion layer after heating;the diffusion layer shear fracture is mainly brittle.

References:

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Last Update: 2012-11-02