PART I: THE FUNDAMENTAL FACTORS INFLUENCING THE BEHAVIOR OF WELDED STRUCTURES UNDER CONDITIONS OF MULTIAXIAL STRESS AND VARIATIONS OF TEMPERATURE PART II: THE EFFECT OF SUBCRITICAL HEAT TREATMENT ON THE TRANSITION TEMPERATURE OF A LOW CARBON SHIP PLATE STEEL

Three progress reports were issued entitled, "The Fundamental Factors Influencing the Behavior of Welded Structures under Conditions of Multiaxial Stress, and Variations of Temperature, Stress Concentration, and Rates of Strain". The major objectives were to determine the relative notch toughness of various zones in commercially welded ship plate steel, and, if such zones could be isolated to determine the dependence of the notch behavior upon material, variations in the welding process, and heat treatment. Eccentric notch tensile tests at various low temperatures were used to evaluate the ductility of a small volume of metal from any position in the weldment. A summary of the work toward these objectives is presented in Part I of this report. Two progress reports were submitted under the title, "The Effect of Subcritical Heat Treatment on the Transition Temperature of a Low Carbon Ship Plate Steel". The principal objectives were to (1) give an insight into the basic mechanism which was responsible for the brittle zone found in the subcritically heated region in weldments; (2) determine the maximum embrittlement possible in base plate by subcritical heat treatment; and (3) suggest possible methods of minimizing or eliminating this embrittlement in base plate which may be applicable to weldments. This work is presented in Part II. The important findings of the two different phases of the investigation are integrated to show that the quench-aging mechanism appears to be responsible for the brittle zone outside the weld area of low carbon ship plate weldments.

• Corporate Authors:

  Case Western Reserve University

  Department of Civil Engineering
  10900 Euclid Avenue
  Cleveland, OH  United States  44106

  Ship Structure Committee

  National Academy of Science, 2101 Constitution Avenue, NW
  Washington, DC  United States  20418
• Authors:
  • Baldwin Jr, W M
  • Evans, E B
• Publication Date: 1953-11-6

Media Info

• Features: References;
• Pagination: 48 p.

Subject/Index Terms

• TRT Terms: Brittleness; Defects; Heat affected zone (Metals); Metal heating; Notching (Cutting); Plate bearing test; Strength of materials; Welds
• Identifier Terms: Ship Structure Committee
• Uncontrolled Terms: Heat treatment; Weld defects
• Old TRIS Terms: Notch toughness
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00331008
• Record Type: Publication
• Source Agency: Ship Structure Committee
• Report/Paper Numbers: SSC- 64 Final Rpt.
• Contract Numbers: NObs-45470
• Files: TRIS
• Created Date: May 21 1981 12:00AM