Effect of Loading Rate on Fracture Morphology in a High Strength Ductile Steel-Reference-Cited by-同舟云学术

Effect of Loading Rate on Fracture Morphology in a High Strength Ductile Steel

Published:2000-11-17 Issue:3 Volume:123 Page:261-267
ISSN:0094-4289
Container-title:Journal of Engineering Materials and Technology
language:en
Short-container-title:

Author:

Venkert A.¹,Guduru P. R.¹,Ravichandran G.¹

Affiliation:

1. Graduate Aeronautical Laboratories, Mail Code 105-50, California Institute of Technology, Pasadena, CA 91125

Abstract

Fracture experiments in a high-strength ductile steel (2.3Ni-1.3Cr-0.17C) were conducted under static and dynamic loading conditions in a three-point bend and a one-point bend configurations. A qualitative description of the influence of loading rate on the microscopic features of the fracture surfaces and their role in the fracture initiation process was considered. The fracture surfaces consist of tunneled region and shear lips. The size of the shear lips increases with increasing loading rate and is characterized by micro-voids and cell structures. The tunneled region consists of large voids and micro-voids that coalesce by impingement. At high loading rates, localized molten zones are observed at the tunnel-shear lip interface.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://asmedigitalcollection.asme.org/materialstechnology/article-pdf/123/3/261/5568593/261_1.pdf

Reference29 articles.

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