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- W2079717296 abstract "Micro- and macroscopic damage and fracture behaviour of the simulated coarse grained heat affected zone (CGHAZ) of a high strength low alloy steel weld are studied through experimental and continuum damage mechanics (CDM) approaches. In order to study the damage and fracture behaviour of the CGHAZ carefully, weld thermal simulation technique is used to enlarge and to generate the region. The dynamic microprocesses of damage and fracture in the CGHAZ are observed through in situ techniques in conjunction with a scanning electron microscope (SEM) equipped with a tensile platform. Several mechanisms of void initiation and crack propagation are observed. A criterion for void initiation by cracking of the inclusion itself and/or debonding at the inclusion-matrix interface is derived. The macroscopic damage evolution law in the CGHAZ is measured through a new a.c. potential system and modelled by use of CDM. A damage evolution equation for the CGHAZ is presented. Comparison of experimental and modelling results is presented and good agreement is found. The effects of stress triaxiality on void initiation, damage evolution and failure in the CGHAZ are also discussed in the framework of CDM." @default.
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- W2079717296 date "1993-08-01" @default.
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- W2079717296 title "Micro- and macroscopic damage and fracture behaviour of welding coarse grained heat affected zone of a low alloy steel: Mechanisms and modelling" @default.
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- W2079717296 doi "https://doi.org/10.1016/0013-7944(93)90066-2" @default.
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