Accession Number:

AD0605283

Title:

RESEARCH ON THE BINARY IRON-NICKEL ALLOYS WITH 20 TO 25 PERCENT NICKEL

Descriptive Note:

Technical documentary rept. for 1 Mar 1961-30 Sep 1962

Corporate Author:

CURTISS-WRIGHT CORP WOOD-RIDGE NJ WRIGHT AERONAUTICAL DIV

Report Date:

1964-06-01

Pagination or Media Count:

508.0

Abstract:

The physical metallurgy, mechanical properties and weld properties of the binary iron-nickel base alloys designated as Maraging Steels are presented. The primary data obtained during the program consisted of sheet and bar tensile properties as a function of various heat treatments and mill processing variables. Also determined were the fracture toughness parameters corresponding to strength levels produced by the various conditions mentioned above. Secondary data generated included elevated temperature tensile properties, billet and forging properties, room temperature fatigue properties and Charpy impact strengths at cryogenic temperatures. The results of the mechanical properties evaluation indicated that the best combination of fracture toughness and yield strength were offered by the 18 nickel alloys at both the 250 and 300 KSI strength levels. A comparison of the alloys on the basis of weld tensile and fracture toughness properties indicate the 18 nickel alloys as exhibiting superior weldability.

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE