Dynamic Fracture Toughness Characteristics of D2 Tool Steel |
Contents
Experimental Procedure | 31 |
Discussion of Results | 36 |
Dynamic Fracture Toughness | 50 |
4 other sections not shown
Common terms and phrases
AISI D2 alloy carbides analysis appears austemper process austempered samples bainite carbides present carbon cause Charpy compared composition Concentration of Cr condition conventional austenitizing temperatures crack propagation critical curve D2 tool steel decreased delineation Depth Sputtered determine difference diffusion distribution dynamic fracture toughness effect electron energy failure ferrite Figure 13 formed fracture surface ft-lb grain boundaries hardness heat treatment higher than conventional hour illustrates importance increased initiation instrumented impact test isothermal transformation less lower martensite materials matrix maximum load mechanical microstructure present microstructure produced notch root radius observed obtained plane strain possible presence of retained properties quenched and tempered resistance retained austenite content retained austenite present secondary carbides significant specimen stability stress structure Table temper process temperature was increased tempered martensite tempered samples tempering temperature trends UHB Sverker 21 unnotched versus austenitizing temperature Villela's Reagent x-ray zone