Problems in the Application of High-Strength Steel Alloys in the Design of SUPERSONIC Aircraft

1958 ◽  
Author(s):  
A. F. Ensrud
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Steel Alloys ◽  
Supersonic Aircraft

Compressive Properties of Solid and Porous Parts Made from High Strength Steel Alloys by Direct Metal Deposition

2014 ◽  
Vol 974 ◽  
pp. 141-146
Author(s):  
Syed H. Riza ◽  
S.H. Masood ◽  
Cui E Wen
Keyword(s):  
High Strength Steel ◽  
Compressive Loading ◽  
High Hardness ◽  
Steel Structures ◽  
High Strength ◽  
Metal Deposition ◽  
Direct Metal Deposition ◽  
Steel Plates ◽  
Steel Alloys ◽  
Low Modulus

The potential of laser assisted Direct Metal Deposition (DMD) process, for creating structures from high strength steel alloys that can be used in engineering applications requiring high strength and greater ductility in combination with high hardness is investigated. Due to increasing interest in metallic honeycomb and sandwiched structures, solid and porous specimens are prepared and examined in similar conditions. Specimen using two different powders of 316L stainless steel and H13 tool steel alloy are generated by DMD cladding on mild steel plates as substrates. The parts are tested under quasi static compressive loading and curves plotted and analysed for stress vs. strain behaviour. The results indicate that at low laser power, solid and porous steel structures with yield strength and ductility comparable to commercial grades can be produced. Porous structures show excellent characteristics suitable for applications in newly developing field of metallic honeycombs and sandwiched structures. Low modulus of elasticity is a matter of concern, but it can be improved by heat treatment.

CENTER NOTCH PLANE STRAIN K-IC FRACTURE TOUGHNESS PROPERTIES OF SEVERAL HIGH-STRENGTH STEEL ALLOYS

1965 ◽  
Author(s):  
Sidney O. Davis ◽  
Nathan G. Tupper ◽  
Dana C. LaGrone ◽  
Roger M. Niemi
Keyword(s):  
Fracture Toughness ◽  
Plane Strain ◽  
High Strength Steel ◽  
High Strength ◽  
Steel Alloys
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