Experimental investigation of charpy impact tests on metallic SLM parts

2009 ◽  
Author(s):  
M Rombouts ◽  
E Yasa ◽  
J Luyten ◽  
J Deckers ◽  
J Kruth
Keyword(s):  
Experimental Investigation ◽  
Charpy Impact ◽  
Impact Tests

Charpy Impact Tests of Polyester Composites Reinforced with Palf fibers

2016 ◽  
pp. 371-376
Author(s):  
Gabriel O. Glória ◽  
Giulio R. Altoé ◽  
Maycon A. Gomes ◽  
Carlos Maurício F. Vieira ◽  
Maria Carolina A. Teles ◽  
...  
Keyword(s):  
Charpy Impact ◽  
Impact Tests ◽  
Polyester Composites

scholarly journals Microstructure and Mechanical Properties Affecting Crack Growth Behaviour in AA6060 Produced by Equal-Channel Angular Extrusion

2008 ◽  
Vol 584-586 ◽  
pp. 815-820 ◽  
Author(s):  
Lothar W. Meyer ◽  
Kristin Sommer ◽  
T. Halle ◽  
Matthias Hockauf
Keyword(s):  
Heat Treatment ◽  
Grain Size ◽  
Fatigue Crack ◽  
Crack Propagation ◽  
Crack Growth ◽  
Charpy Impact ◽  
Coarse Grained ◽  
Growth Behaviour ◽  
Crack Growth Behaviour ◽  
Impact Tests

Crack growth in AA6060 after two and eight equal-channel angular extrusions (ECAE), showing a bimodal microstructure and a homogenous ultrafine-grained microstructure, respectively, are compared to the coarse grained counterpart. Furthermore, an optimized condition, obtained by combining one ECA-extrusion and a subsequent short aging treatment is included. Fatigue crack growth behaviour in the near-threshold regime and the region of stable crack growth is investigated and related to microstructural features such as grain size, grain size distribution, grain boundary characteristics and ductility. Micrographs of crack propagation surfaces reveal information on crack propagation features such as crack path deflection and give an insight to the underlying microstructure. Instrumented Charpy impact tests are performed to investigate crack initiation and propagation under impact conditions. Due to the recovery of ductility during the post-ECAE heat treatment, the optimized condition shows improved fatigue crack properties and higher energy consumption in Charpy impact tests, when compared to the as-processed conditions without heat treatment.

Transition Region of Nuclear Vessel Steels: Master Curve Approach Using Small Punch Notched Specimens

2017 ◽  
Vol 734 ◽  
pp. 77-86
Author(s):  
Roberto Lacalle ◽  
David Andrés ◽  
José Alberto Álvarez ◽  
Federico Gutiérrez-Solana
Keyword(s):  
Transition Region ◽  
Master Curve ◽  
Nuclear Reactor ◽  
Structural Integrity ◽  
Charpy Impact ◽  
Vessel Steel ◽  
New Approach ◽  
Small Punch ◽  
Impact Tests ◽  
Integrity Assessments

The behaviour of the materials in ductile-brittle transition region must be known when performing structural integrity assessments of nuclear reactor vessels working under the effects of neutron irradiation. The characterisation of this region has been usually carried out by means of Charpy impact tests. Just during last few years new approaches based on direct fracture mechanics tests have begun to be used. In most of these cases, the Master Curve methodology, which allows the transition region to be characterised using only one parameter (T0 reference temperature), has been employed. In this paper the transition region of two materials –one vessel steel and one common structural steel-has been characterised by means of Small Punch Tests. First of all, this zone has been characterised using conventional specimens and the results were compared with those of Charpy impact tests. Finally a new approach based on the use of notched Small Punch samples together with Master Curve methodology has been proposed.

scholarly journals Fracture Behavior and Delamination Toughening of Molybdenum in Charpy Impact Tests

JOM ◽  
2016 ◽  
Vol 68 (11) ◽  
pp. 2854-2863 ◽  
Author(s):  
K. Babinsky ◽  
S. Primig ◽  
W. Knabl ◽  
A. Lorich ◽  
R. Stickler ◽  
...  
Keyword(s):  
Fracture Behavior ◽  
Charpy Impact ◽  
Impact Tests
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