Interfacial structure and growth mechanisms of lath-shaped precipitates in Ni-45 wt° Cr

Chen, Jhewn‐Kuang; Chen, G.; Reynolds, W. T.

doi:10.1080/01418619808241911

Cited by 41 publications

(38 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The result of missing dislocation agrees with the observations of dislocation free habit planes in Cu-Cr [5][6][7] and Ni-Cr alloys [1][2][3][4]. In Table 2, the measured habit plane orientation and the direction of the long axes of bcc precipitates in Cu-Cr [5][6][7] and Ni-Cr alloys [1][2][3][4] are also listed. One can see from Table 2 that the corresponding results from the current study are close to those results from Cu-Cr and Ni-Cr alloys.…”

Section: Or and Habit Planesupporting

confidence: 77%

“…The habit planes were often experimentally observed to be free of dislocation arrays [1][2][3][4][5][6][7], but theoretical calculation showed that there should be a set of closely spaced dislocations in the habit plane of Cr-rich precipitates [22].…”

Section: Introductionmentioning

confidence: 99%

“…The lattice parameter ratios of af/ab all fall between 1.25 and 1.26 in the above mentioned fcc/bcc alloy systems (af and ab refer to the lattice parameter of the fcc and bcc lattice, and the subscript f and b represent fcc and bcc lattices, respectively) [1][2][3][5][6][7]. The orientation relationship (OR) between fcc and bcc phases is usually within 1° of the Kurdjumov-Sachs (K-S) relationship [25].…”

Section: Introductionmentioning

confidence: 99%

“…Quantitative experimental characterizations of fcc/bcc interfacial structures have been conducted in Ni-Cr [1][2][3][4], Cu-Cr [5][6][7], Fe-Cu [8][9][10] and duplex stainless steel (DSS) [11][12][13]. For interpreting the observed precipitation crystallography, researchers have applied various models, including the structural ledge model [5,14], the O-lattice theory [15][16][17][18], the invariant line strain model [1,[19][20][21], the O-line model [22,23] and the near coincidence sites (NCS) model [24].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A TEM study of the crystallography of lath-shaped austenite precipitates in a duplex stainless steel

Mompiou

Zhang

2017

J Mater Sci

View full text Add to dashboard Cite

Abstract:The morphology of austenite (fcc) precipitates in a duplex stainless steel (DSS) is dominated by rods distributed in a ferrite (bcc) matrix. Minority of austenite precipitates also exhibits a lath shape, a common morphology in fcc to bcc transformations rather than a bcc to fcc transformation in a DSS. While the rod-shaped austenite precipitates in a DSS have been interpreted in previous investigations, precipitates with a lath shape were not well understood. This study focused on the lath-shaped austenite by using transmission electron microscopy. The habit plane of lath-shaped austenite was observed to be free of dislocations, but one array of dislocations was observed in the major side facet with a spacing of 9.6nm and

show abstract

Section: Or and Habit Planesupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A TEM study of the crystallography of lath-shaped austenite precipitates in a duplex stainless steel

Mompiou

Zhang

2017

J Mater Sci

View full text Add to dashboard Cite

show abstract

“…S4). These facets are an intrinsic structural feature and have been seen in interfaces with this same crystallography but different material systems 37,39 . From h ¼ 50 to 10 nm, the Cu twins increase in frequency, expand and coalesce (see Supplementary Fig.…”

Section: Resultsmentioning

confidence: 87%

High-strength and thermally stable bulk nanolayered composites due to twin-induced interfaces

Zheng

Beyerlein

Carpenter³

et al. 2013

Nat Commun

325

156

View full text Add to dashboard Cite

Bulk nanostructured metals can attribute both exceptional strength and poor thermal stability to high interfacial content, making it a challenge to utilize them in high-temperature environments. Here we report that a bulk two-phase bimetal nanocomposite synthesised via severe plastic deformation uniquely possesses simultaneous high-strength and high thermal stability. For a bimetal spacing of 10 nm, this composite achieves an order of magnitude increase in hardness of 4.13 GPa over its constituents and maintains it (4.07 GPa), even after annealing at 500°C for 1 h. It owes this extraordinary property to an atomically well-ordered bimaterial interface that results from twin-induced crystal reorientation, persists after extreme strains and prevails over the entire bulk. This discovery proves that interfaces can be designed within bulk nanostructured composites to radically outperform previously prepared bulk nanocrystalline materials, with respect to both mechanical and thermal stability.

show abstract

Edge-to-edge matching of lattice planes and coupling of crystallography and migration mechanisms of planar interfaces

Nie

2006

Metall and Mat Trans A

View full text Add to dashboard Cite

Interfacial structure and growth mechanisms of lath-shaped precipitates in Ni-45 wt° Cr

Cited by 41 publications

References 21 publications

A TEM study of the crystallography of lath-shaped austenite precipitates in a duplex stainless steel

A TEM study of the crystallography of lath-shaped austenite precipitates in a duplex stainless steel

High-strength and thermally stable bulk nanolayered composites due to twin-induced interfaces

Edge-to-edge matching of lattice planes and coupling of crystallography and migration mechanisms of planar interfaces

Contact Info

Product

Resources

About