Results 221 to 230 of about 69,833 (264)

Heat affected zones in polymer laser marking

Journal of Thermal Analysis and Calorimetry, 2013
Laser marking is based on the laser heating of the subjected material, the heating being below the melting temperature or thermal degradation starting point. Within and nearby the mark, the material is chemically, physically and mechanically affected.
Ionel Danut Savu, Sorin Vasile Savu, Nicusor Alin Sirbu   +2 more
openaire   +1 more source

Heat Affected Zone Induced by Laser Forming

Volume 1, 2004
Laser forming induces mechanical and structural modifications around the Laser Scanning Path. Various conventional methods are currently available to estimate properties of materials like X-ray and neutron diffraction, strain/curvature measurement, hole drilling, layer removal, chemical etching, etc.
CASAMICHELE L, GISARIO, ANNAMARIA, TAGLIAFERRI V.   +2 more
openaire   +2 more sources

Prediction of residual stresses in the heat affected zone

Journal de Physique IV, 2004
In this paper the behavior of a disc made up of carbon manganese steel and subjected to an axisymmetric heating in its middle zone is considered. The applied thermal cycle generates localized metallurgical solid-solid phase transformations. Contrary to the study performed some years ago, the present work is concerned with relatively thick discs that ...
Petit-Grostabussiat, S., Taleb, L., Jullien, Jean-François   +2 more
openaire   +2 more sources

Prediction of heat-affected zone using Grey theory

Journal of Materials Processing Technology, 2002
Abstract The amount of deformation and the residual stress, which influence welded plates, are related directly to three aspects of the welding process: the method of heat input; the welding speed and the geometrical conditions; limitations of the weldment.
Hsing-Chia Kuo, Li-Jen Wu
openaire   +1 more source

Fatigue crack propagation through weld heat affected zones

Metallurgical Transactions, 1971
Fatigue tests were performed on specimens containing weld heat affected zones at two orientations to the stress axis. Two heat affected zones were studied, one in Ducol W30 (a low alloy steel) and the other in mild steel. Under conditions of constant alternating and maximum stress intensity a fatigue crack only propagated at a uniform rate when it was ...
K. R. Dowse, C. E. Richards
openaire   +1 more source

Heat Affected Zone in Grinding Operations

1974
The temperature rise, due to the passage of a grinding wheel, may have detrimental effects on the surface integrity of the outermost layers of the ground workpiece. In this contribution, a comparison has been made of various models, worked out for evaluating the heat affected zone.
M. Maris, R. Snoeys
openaire   +1 more source

Small Punch test for weld heat affected zones

Materials at High Temperatures, 2006
AbstractSmall Punch tests (SPT) have been performed on four different zones of P91 welded joint, namely the base metal (BM), the weld metal (WM), the heat affected zone at base metal side (HAZ-BM) and the heat affected zone at weld metal side (HAZ-WM).
Yingzhi Li, Roman Šturm
openaire   +1 more source

Heat affected zone cracking in cast inconel 718

Materials Characterization, 1992
Abstract Electron beam welding parameters have been shown to influence heat-affected zone (HAZ) microfissuring behavior in cast Inconel 718 (Inconel is a trademark of INCO Alloys). Travel speed was shown to be the most significant factor in influencing HAZ cracking behavior by modifying the thermal gradient(s) and subsequently the stress state in the
N.L. Richards, X. Huang, M.C. Chaturvedi
openaire   +1 more source

Heat Affected Zone in the MEMS Wire Bonding

2009 International Conference on Measuring Technology and Mechatronics Automation, 2009
In the wire bonding process of MEMS packaging, Heat Affect Zone (HAZ) is the important factor governing the loop profile of bonding. The height of loop is affected by the length of the HAZ. Factors governing the HAZ are studied. To investigate this relationship, the experiments were done for the various sizes of wire diameter and Free Air Ball (FAB ...
Yuetao Liu, Yanjie Liu, Lining Sun
openaire   +1 more source

Crack Arrest Toughness of a Heat-Affected Zone Containing Local Brittle Zones

Journal of Offshore Mechanics and Arctic Engineering, 1996
Abstract The awareness of the presence of local brittle zones (LBZs) in the heat-affected zone (HAZ) of welds has led to the requirements for minimum initiation (CTOD) toughness for the HAZ for critical applications (API RP 2Z, CSA S473).
L. Malik, L. N. Pussegoda, B. A. Graville, W. R. Tyson   +3 more
openaire   +1 more source