2010
DOI: 10.1016/j.msea.2009.09.035
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The influence of phosphorus on the microstructure and stress-rupture properties in a low thermal expansion superalloy

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Cited by 22 publications
(3 citation statements)
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“…In addition, the heat treatment leading to the dual microstructure observed in our X-750 grade leads to the formation of intergranular carbides with a high density. 13 Moreover, impurities segregation could decrease the cohesion on the precipitate/matrix interface, and then lead to early failures, as shown for example by Yu and co-workers 14 for the intergranular b/c interface in IN 793 superalloy. Each grade follows a specific damage initiation pattern, which are summarised by: N grade A: the activation of grain boundary sliding, which induces a stress enhancement at neighboring boundaries near the triple point, resulting in the opening of 'wedge' cracks (cf.…”
Section: Damage Initiationmentioning
confidence: 93%
“…In addition, the heat treatment leading to the dual microstructure observed in our X-750 grade leads to the formation of intergranular carbides with a high density. 13 Moreover, impurities segregation could decrease the cohesion on the precipitate/matrix interface, and then lead to early failures, as shown for example by Yu and co-workers 14 for the intergranular b/c interface in IN 793 superalloy. Each grade follows a specific damage initiation pattern, which are summarised by: N grade A: the activation of grain boundary sliding, which induces a stress enhancement at neighboring boundaries near the triple point, resulting in the opening of 'wedge' cracks (cf.…”
Section: Damage Initiationmentioning
confidence: 93%
“…However, the addition of P was reported to weaken the tensile strength, but improve the impact energy of Ni-Cr alloys [10]. For IN783, the interfacial cohesion strength in heavily P-doped alloy was weakened and the stress rupture life was shortened [11]. Obviously, the beneficial effect of P on mechanical properties is selective and depends on alloy systems.…”
Section: Introductionmentioning
confidence: 99%
“…However, it is worthy noting that negative effects of phosphorus on stress-rupture life were also found in Waspaloy and IN783 in specified conditions. It is obvious that the special effects of phosphorus on mechanical properties depend on alloy systems strongly [14,15]. The difference of composition in alloys such as the scale of Fe and Ni may occupy a dominant position.…”
Section: Introductionmentioning
confidence: 99%