Stress Corrosion Cracking of High Strength Skills. Abstract Only

Abstract

The stress corrosion cracking of AerMet 100 and 300M steels was investigated in aqueous NaCl solutions of different concentrations (0.035-3.5%) but an identical electrical conductivity, employing rising step load test method. The threshold stress intensity for stress corrosion cracking, K(sub ISCC), increases from 15.4 MPa square root of m to 26.4 v with applied cathodic potential for AerMet 100 steel. On the other hand, K(sub ISCC) is relatively constant, 15.4-16.5 MPa square root of m, for all potentials employed, ranging from -1.2 V(sub SCE) to -0.7 V(sub SCE). The open circuit potentials and the K(ISCC) values at those potentials are greater for AerMet 100 steel than for 300M steel. These results indicate the AerMet 100 steel is nobler and more resistant to stress corrosion cracking than 300M steel. The SEM fractographs of both steels show mixed intergranular and cleavage cracking across all potential employed.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 12, 1999
Accession Number
ADA367777

Entities

People

  • Bhaskar Sarkar
  • Eun Lee
  • Henry Sanders

Organizations

  • Naval Air Warfare Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Aerial Warfare
  • Aircrafts
  • Corrosion
  • Electrical Conductivity
  • Ferrium
  • Information Operations
  • Intensity
  • Numbers
  • Square Roots
  • Steel
  • Stress Corrosion
  • Stress Corrosion Cracking
  • Stress Tests
  • Test Methods

Fields of Study

  • Materials science

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Materials Science (Mechanical Engineering).