Analysis of undercooling, nucleation, rapid solidification, and microstructure formation in thermal spraying

H. Zhang; X. Y. Wang; S. Sampath

doi:10.1115/IMECE2002-32907

Analysis of undercooling, nucleation, rapid solidification, and microstructure formation in thermal spraying

H. Zhang
, X. Y. Wang
, S. Sampath

Materials Science and Engineering

Stony Brook University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

A splat formation model including undercooling, nucleation, and non-equilibrium solidification has been developed to study the thermal characteristics of molten droplets impacting on a flat substrate. The nucleation sub-model is based on the classic nucleation theory accounting for heterogeneous nucleation kinetic and crystal growth. The effects of contact angle on nucleation temperature and grain density have been investigated. The grain size distributions have been predicted and compared with experimental results for molybdenum (Mo) splats on different substrates. Based on scaling analysis, time scales of various sub-processes, e.g., the nucleation delay, recalesence, and total solidification time, have been derived, and compared with simulation results.

Original language	English
Title of host publication	Heat Transfer
Publisher	American Society of Mechanical Engineers (ASME)
Pages	255-267
Number of pages	13
ISBN (Print)	0791836363, 9780791836361
DOIs	https://doi.org/10.1115/IMECE2002-32907
State	Published - 2002
Event	ASME 2002 International Mechanical Engineering Congress and Exposition, IMECE2002 - New Orleans, LA, United States Duration: Nov 17 2002 → Nov 22 2002

Publication series

Name	ASME International Mechanical Engineering Congress and Exposition, Proceedings
Volume	5

Conference

Conference	ASME 2002 International Mechanical Engineering Congress and Exposition, IMECE2002
Country/Territory	United States
City	New Orleans, LA
Period	11/17/02 → 11/22/02

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10.1115/IMECE2002-32907

Cite this

@inproceedings{12b850cc2415468cbf6f16696c2c7237,

title = "Analysis of undercooling, nucleation, rapid solidification, and microstructure formation in thermal spraying",

abstract = "A splat formation model including undercooling, nucleation, and non-equilibrium solidification has been developed to study the thermal characteristics of molten droplets impacting on a flat substrate. The nucleation sub-model is based on the classic nucleation theory accounting for heterogeneous nucleation kinetic and crystal growth. The effects of contact angle on nucleation temperature and grain density have been investigated. The grain size distributions have been predicted and compared with experimental results for molybdenum (Mo) splats on different substrates. Based on scaling analysis, time scales of various sub-processes, e.g., the nucleation delay, recalesence, and total solidification time, have been derived, and compared with simulation results.",

author = "H. Zhang and Wang, \{X. Y.\} and S. Sampath",

year = "2002",

doi = "10.1115/IMECE2002-32907",

language = "English",

isbn = "0791836363",

series = "ASME International Mechanical Engineering Congress and Exposition, Proceedings",

publisher = "American Society of Mechanical Engineers (ASME)",

pages = "255--267",

booktitle = "Heat Transfer",

note = "ASME 2002 International Mechanical Engineering Congress and Exposition, IMECE2002 ; Conference date: 17-11-2002 Through 22-11-2002",

}

Zhang, H, Wang, XY & Sampath, S 2002, Analysis of undercooling, nucleation, rapid solidification, and microstructure formation in thermal spraying. in Heat Transfer. ASME International Mechanical Engineering Congress and Exposition, Proceedings, vol. 5, American Society of Mechanical Engineers (ASME), pp. 255-267, ASME 2002 International Mechanical Engineering Congress and Exposition, IMECE2002, New Orleans, LA, United States, 11/17/02. https://doi.org/10.1115/IMECE2002-32907

Analysis of undercooling, nucleation, rapid solidification, and microstructure formation in thermal spraying. / Zhang, H.; Wang, X. Y.; Sampath, S.
Heat Transfer. American Society of Mechanical Engineers (ASME), 2002. p. 255-267 (ASME International Mechanical Engineering Congress and Exposition, Proceedings; Vol. 5).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Analysis of undercooling, nucleation, rapid solidification, and microstructure formation in thermal spraying

AU - Zhang, H.

AU - Wang, X. Y.

AU - Sampath, S.

PY - 2002

Y1 - 2002

N2 - A splat formation model including undercooling, nucleation, and non-equilibrium solidification has been developed to study the thermal characteristics of molten droplets impacting on a flat substrate. The nucleation sub-model is based on the classic nucleation theory accounting for heterogeneous nucleation kinetic and crystal growth. The effects of contact angle on nucleation temperature and grain density have been investigated. The grain size distributions have been predicted and compared with experimental results for molybdenum (Mo) splats on different substrates. Based on scaling analysis, time scales of various sub-processes, e.g., the nucleation delay, recalesence, and total solidification time, have been derived, and compared with simulation results.

AB - A splat formation model including undercooling, nucleation, and non-equilibrium solidification has been developed to study the thermal characteristics of molten droplets impacting on a flat substrate. The nucleation sub-model is based on the classic nucleation theory accounting for heterogeneous nucleation kinetic and crystal growth. The effects of contact angle on nucleation temperature and grain density have been investigated. The grain size distributions have been predicted and compared with experimental results for molybdenum (Mo) splats on different substrates. Based on scaling analysis, time scales of various sub-processes, e.g., the nucleation delay, recalesence, and total solidification time, have been derived, and compared with simulation results.

UR - https://www.scopus.com/pages/publications/78249241198

U2 - 10.1115/IMECE2002-32907

DO - 10.1115/IMECE2002-32907

M3 - Conference contribution

AN - SCOPUS:78249241198

SN - 0791836363

SN - 9780791836361

T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings

SP - 255

EP - 267

BT - Heat Transfer

PB - American Society of Mechanical Engineers (ASME)

T2 - ASME 2002 International Mechanical Engineering Congress and Exposition, IMECE2002

Y2 - 17 November 2002 through 22 November 2002

ER -

Analysis of undercooling, nucleation, rapid solidification, and microstructure formation in thermal spraying

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