Deformation-induced pseudo-twinning and a new superstructure in Ni2Mo precipitates contained in a Ni-25Mo-8Cr alloy
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Cited by (17)
Portevin-Le Chatelier effect, twinning-detwinning and disordering in an aged Ni–Cr–Mo alloy during large plastic deformation
2021, Materials Science and Engineering: ACitation Excerpt :Therefore, the precipitation of the Pt2Mo-type LRO phase has the influence on changing the preferred deformation mode from slip into twinning. As a result, the widespread deformation twins are observed in the aged and then deformed Ni–Cr–Mo alloy [18,19,22–24]. Our previous works have found that the coherent Pt2Mo-type LRO phase can precipitate in a recently developed Hastelloy C2000 alloy (Ni–23Cr–16Mo, wt.
Twinning during deformation in a Pt<inf>2</inf>Mo ordered phase strengthened Ni–Cr–Mo alloy
2021, Materials Science and Engineering: ACitation Excerpt :As a result, 10/12 {111}<110>fcc slip systems are suppressed, while only 2/12{111}<112>fcc twinning systems are prevented. It is reasonable that twinning on {111}fcc planes become a dominant deformation mode in an ordering alloy [17–19], which is consistent with our previous result observed by TEM images in C11b superlattices containing Ni–Cr–Mo alloy [20]. TEM images indicated that deformation twins induced by ordering exhibit only a single orientation during plastic deformation, regardless of size, density and even type of ordered phases [12,20].
Microstructure evolution during the precipitation and growth of fully coherent DO<inf>22</inf> superlattice in an Ni-Cr-W alloy
2016, Materials CharacterizationCitation Excerpt :Superstructural ordering which is prevalent in several Ni-based alloys has been the subject of vigorous studies recently. The Ni-Cr-Mo system, by virtue of it possessing a number of intermetallic compounds such as C11b (Pt2Mo-type), DO22 and D1a superlattices, has been the prime candidate for such investigations [1–14]. Although tungsten and molybdenum are both in the VI B group of the periodic of elements, the order-disorder transformations in the analogous Ni-Cr-W system have not been pursued with the same vigour.
Precipitation of coherent Ni<inf>2</inf>(Cr, W) superlattice in an Ni-Cr-W superalloy
2016, Materials CharacterizationFirst principles investigation on the stability and elastic properties of Ni<inf>2</inf>Cr<inf>1-x</inf>M<inf>x</inf> (M = Nb, Mo, Ta, and W) superlattices
2013, IntermetallicsCitation Excerpt :Ni2Cr-type superlattices widely exist in Ni–Cr based and Ni–Mo based alloys through order–disorder transformation [1–8], and they are of vital importance in the improvement of mechanical properties [5,9–11].
Anomalous aging behavior of a Ni-Mo-Cr-Re alloy
2012, Materials Science and Engineering: ACitation Excerpt :The alloy is strengthened by LRO to form A2B-type domains that are stabilized by addition of Cr to Ni–Mo alloy [20], where A and B are two different elements with small and large atomic diameters, respectively. The researchers defined the A2B-type domains as precipitates and considered the system as a precipitate strengthened alloy [16,21–29], or merely a LRO hardened alloy [13–15,20]. This paper refers the strengthening component as nanosized hardening domains (NSHD) in most of the text because a discussion of differences between LRO hardening and precipitate hardening is out of the scope of the current paper.
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Now at the Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, MD 21218-2686, U.S.A.