On statistical behaviour of stress drops in Portevin�?�Le Chatelier effect

Bulletin of materials science

A Chatterjee³  P Mukherjee³  A Sarkar²  Arnab Barat¹  N Gayathri³  P Barat³ 

[1] Indian Statistical Institute, 203 B.T. Road, Kolkata 700 105, India$$Indian Statistical Institute, 203 B.T. Road, Kolkata 700 105, IndiaIndian Statistical Institute, 203 B.T. Road, Kolkata 700 105, India$$;Mechanical Metallurgy Section, Bhabha Atomic Research Centre, Mumbai 400 085, India$$Mechanical Metallurgy Section, Bhabha Atomic Research Centre, Mumbai 400 085, IndiaMechanical Metallurgy Section, Bhabha Atomic Research Centre, Mumbai 400 085, India$$;Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata 700 064, India$$Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata 700 064, IndiaVariable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata 700 064, India$$

关键词: Plastic deformation;    Portevinâ€�?�Le Chatelier effect;    aluminum alloy;    steel;    Poisson distribution.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The Portevin�?�Le Chatelier (PLC) effect is a kind of plastic instability observed in many dilute alloys when deformed at certain ranges of strain rate and temperature. In this paper we present a comprehensive statistical analysis of the observed experimental data obtained during PLC effect and establish that the occurrence probability of the stress drops in the dynamical process responsible for PLC effect is Poisson in nature.

【 授权许可】

Unknown