Fracture Characteristics of Two High-Strength, Low-Alloy and Two Stainless Steels
Abstract
The fracture characteristics of two high-strength, low-alloy structural steels (ASTM A-588 and A-242) and two stainless steels (AISI 416 and 17-4PH) were analyzed under tensile, fatigue, and impact loading conditions. The effects of hydrogen- and temper-embrittlement on the materials' behavior when fractured under tensile and fatigue conditions were investigated. The structural steels were found to be unsusceptible to temper-embrittlement. ASTM A-588 was found to be susceptible to hydrogen-embrittlement; A-242 was not found susceptible, but this could be attributed to the abnormally low toughness condition of the as-received material. The stainless steels were found to be unsusceptible to the hydrogen-charging procedure performed in this study. Mechanical tests showed large variations in values for the tempered stainless steeel specimens, although the fracture surfaces appeared very similar. These findings reaffirmed the generally accepted concept that visual observation is not a sufficient method for determining temper-embrittlement, but must be combined with mechanical testing to reach valid conclusions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1977
- Accession Number
- ADA035629
Entities
People
- E. P. Cox
- Joseph K. Scott
Organizations
- Construction Engineering Research Laboratory