Application of grain boundary engineering concepts to alleviate intergranular cracking in Alloys 600 and 690
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Enhanced resistance to gas tungsten arc weld heat-affected zone cracking in a newly developed Co-based superalloy
2022, Materials Science and Engineering: ACitation Excerpt :According to equation (1), it can be observed that liquid film thickness reduction as a result of grain refinement, can increase the degree of stress required to form liquation cracking, which leads to an increase in HAZ cracking resistance. In addition, grain size refinement can reduce GB elemental segregation, improve stress relaxation capability by GB sliding, and increase the number of GB triple points that increases the probability of arresting a crack [18,47,48]. PWHT is an essential process after welding superalloys as it relaxes residual stresses that occur during welding, and restores the weldment strength, and other mechanical properties [49].
Electrodeposited nanocrystalline medium-entropy alloys – An effective strategy of producing stronger and more stable nanomaterials
2022, Journal of Alloys and CompoundsCitation Excerpt :Both NiFeCo and NiFeCr fall into this category, however, different approaches were required to achieve the desired compositions in each alloy system. In NiFeCr, the CD and temperature are known to significantly alter the composition of the deposits within reasonably small ranges [44,53], whereas in NiFeCo, these dependencies were not as strong [54,55]. As such the most effective method of altering the composition of the NiFeCo deposits was to adjust the electrolyte concentration accordingly.
Study of the relationship between intergranular stress corrosion cracking and grain boundary characteristics in brass
2021, Electrochemistry CommunicationsMitigation of hydrogen embrittlement in alloy custom age 625 PLUS® via grain boundary engineering
2021, Materials Science and Engineering: ACitation Excerpt :GBE refers to thermomechanical processing methods designed to improve the properties of a material by modifying the network of grain boundaries, especially by promoting the formation of twin boundaries and low-Σ coincident site lattice (CSL) boundaries [20–22]. GBE has been applied empirically to improve a wide variety of properties [23–26]. Recent work by Barr et al. has shown that effective GBE microstructures can be produced by the formation of large twin related domains (TRDs) and that large TRDs can be formed by cold rolling at relatively low rolling reductions and annealing at temperatures just above the threshold temperature for recrystallization, around 0.75Tm [27].
Post-deposition crack evolution in Cr(III) alloy electrodeposits: Phenomenology
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