کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1450683 | 988742 | 2005 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Crystallography of [0 1 1]/54.7° lath boundary and cementite in tempered 0.2C steel Crystallography of [0 1 1]/54.7° lath boundary and cementite in tempered 0.2C steel](/preview/png/1450683.png)
The crystallographic structures of the [0 1 1]/54.7° lath boundary and the intralath and interlath cementite precipitates in a 0.2C steel tempered at 400 °C have been observed by high resolution transmission electron microscopy and discussed in terms of the O-lattice model. The [0 1 1]/54.7° lath boundary which is composed of one Kurdjumov–Sachs variant (α1) and one Nishiyama–Wasserman variant (α2) is likely to facet on the (0 12 7)α1//(5 19 14)α2 irrational plane. The O-lattice analysis indicated that the facet coincides with a plane with a high density of O-points. Intralath cementite obeys the Isaichev orientation relationship (OR) with ferrite and has a habit plane of (1 0 1)θ//(1 2 1)α. Interlath cementite precipitating on the [0 1 1]/54.7° boundary maintains a strict Bagaryatskii OR with the ferrite on one side of the boundary and has a (1 0 0)θ habit plane.
Journal: Acta Materialia - Volume 53, Issue 8, May 2005, Pages 2419–2429