The semithickness-to-radius ratio of martensitic plates in FeNi alloys

Microstructural Path Analysis of Martensite Dimensions in FeNiC and FeC Alloys

“…The decrease of the intrinsic aspect-ratio of martensite with the transformation temperature is in qualitative agreement with the data described in 32,33,39 . In the present work, the influence of thermal energy on the aspect ratio of martensite could be brought forth by analyzing martensite's microstructural path in extended space as a mean to compensate the observed unit-size for self-accommodation.…”

“…The smaller values of α i typical of the Fe-1.86wt%C compared with those of the Fe-31wt%Ni-0.02wt%C are consistent with the slender morphology of the high-C martensite. In addition, one acknowledges qualitative compatibility between the temperature variation of the intrinsic aspect ratio of the FeNiC martensite depicted in Tables 1-3 with the data reported in 32,33 -see Figure 2. The steeper temperature-variation of α i in comparison with the mean semi-thickness to radius / c r ratio of the martensite units reported in Datta-Raghavan 32 and Visvesvaran 33 is due to the difference in the experimental methodology.…”

“…In addition, one acknowledges qualitative compatibility between the temperature variation of the intrinsic aspect ratio of the FeNiC martensite depicted in Tables 1-3 with the data reported in 32,33 -see Figure 2. The steeper temperature-variation of α i in comparison with the mean semi-thickness to radius / c r ratio of the martensite units reported in Datta-Raghavan 32 and Visvesvaran 33 is due to the difference in the experimental methodology. In Datta-Raghavan 32 and Visvesvaran 33 the authors obtained the variation of / c r by using alloys with [ 32,33] .…”

“…The steeper temperature-variation of α i in comparison with the mean semi-thickness to radius / c r ratio of the martensite units reported in Datta-Raghavan 32 and Visvesvaran 33 is due to the difference in the experimental methodology. In Datta-Raghavan 32 and Visvesvaran 33 the authors obtained the variation of / c r by using alloys with [ 32,33] . Whereas, in the present work JMAK's extended-space concept [20][21][22] was used to estimate the intrinsic dimensions of the martensite units formed in bulk polycrystalline-specimens of the reference-alloys cooled to different temperatures below the martensite-start.…”

Discussion of “a study on morphology and plate mean dimensions in Fe-Ni and Fe-Ni-Cr alloys”

“…[1][2][3][4] In the article under discussion, Visvesvaran (hereinafter referred to as the author) has extended these studies to Fe-Ni-Cr alloys and also confirmed the previous experimental results on Fe-Ni alloys. [1][2][3][4] In the article under discussion, Visvesvaran (hereinafter referred to as the author) has extended these studies to Fe-Ni-Cr alloys and also confirmed the previous experimental results on Fe-Ni alloys.…”