Call number:
ZSP-202-342
In:
Research report / Cold Regions Research and Engineering Laboratory
Description / Table of Contents:
CONTENTS: Abstract. - Preface. - Introduction. - Experimental procedure. - Results. - Work-hardening effect. - Strain rate sensitivity of flow stress. - Discussion. - Conclusions. - Literature cited.
Description / Table of Contents:
Single crystals of high purity ice deformed by uniaxial compression on an Instron machine showed remarkable work-hardening after about 8% strain. By changing the strain rate during compression tests in the plastic region of the stress-strain curve, an apparent activation volume V* and a dislocation mobility exponent m were calculated from the strain rate sensitivity of flow stress. The large work-hardening and the rapid increase in the value of m beyond about 10% strain indicate that the plastic flow in this region is controlled by dislocation intersections and nonconservative motion of jogs.
Type of Medium:
Series available for loan
Pages:
iii, 11 Seiten
,
Illustrationen
Series Statement:
Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 342
URL:
https://usace.contentdm.oclc.org/digital/collection/p266001coll1/id/6203
Language:
English
Branch Library:
AWI Library
Permalink