Effect of sintering temperature on fatigue crack propagation rate of sintered Ag nanoparticles

Ryo Kimura, Yoshiharu Kariya, Noritsuka Mizumura, Koji Sasaki

研究成果: Article

1 引用 (Scopus)

抄録

In this study, the effect of sintering temperatures on fatigue crack propagation rates of sintered Ag nanoparticles were investigated. Paris' law type fatigue crack propagation law between the fatigue crack propagation rate and the inelastic strain energy density range was found to hold at all test temperatures. The power exponent in the fatigue crack propagation law for the Ag nanoparticles sintered at 423 K was large and the fatigue crack propagation rate was fast with excessively brittle behavior. The stress and strain concentrations at neck parts interlinked with each other in damaged areas, in addition to the brittle grain boundary fractures, resulted in the excessively brittle behavior. On the other hand, the Ag nanoparticles sintered at 473 K showed more ductile behavior as pores decreases with sintering progression and the local strain concentrations were fewer compared to the Ag nanoparticles sintered at 423 K. However, with test temperature increasing, the grain boundary became viscous, so the power exponent in the fatigue crack propagation law and fatigue crack propagation rate at any sintering temperature decreased, causing only minor differences by sintering temperature in fatigue crack propagation rates.

元の言語English
ページ(範囲)612-619
ページ数8
ジャーナルMaterials Transactions
59
発行部数4
DOI
出版物ステータスPublished - 2018 1 1

Fingerprint

crack propagation
Fatigue crack propagation
sintering
Sintering
Nanoparticles
nanoparticles
Temperature
temperature
Grain boundaries
grain boundaries
exponents
stress concentration
Strain energy
progressions
flux density
porosity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

これを引用

Effect of sintering temperature on fatigue crack propagation rate of sintered Ag nanoparticles. / Kimura, Ryo; Kariya, Yoshiharu; Mizumura, Noritsuka; Sasaki, Koji.

:: Materials Transactions, 巻 59, 番号 4, 01.01.2018, p. 612-619.

研究成果: Article

Kimura, Ryo ; Kariya, Yoshiharu ; Mizumura, Noritsuka ; Sasaki, Koji. / Effect of sintering temperature on fatigue crack propagation rate of sintered Ag nanoparticles. :: Materials Transactions. 2018 ; 巻 59, 番号 4. pp. 612-619.
@article{942d8e70c17241b0a2a04caa6a8a2aa5,
title = "Effect of sintering temperature on fatigue crack propagation rate of sintered Ag nanoparticles",
abstract = "In this study, the effect of sintering temperatures on fatigue crack propagation rates of sintered Ag nanoparticles were investigated. Paris' law type fatigue crack propagation law between the fatigue crack propagation rate and the inelastic strain energy density range was found to hold at all test temperatures. The power exponent in the fatigue crack propagation law for the Ag nanoparticles sintered at 423 K was large and the fatigue crack propagation rate was fast with excessively brittle behavior. The stress and strain concentrations at neck parts interlinked with each other in damaged areas, in addition to the brittle grain boundary fractures, resulted in the excessively brittle behavior. On the other hand, the Ag nanoparticles sintered at 473 K showed more ductile behavior as pores decreases with sintering progression and the local strain concentrations were fewer compared to the Ag nanoparticles sintered at 423 K. However, with test temperature increasing, the grain boundary became viscous, so the power exponent in the fatigue crack propagation law and fatigue crack propagation rate at any sintering temperature decreased, causing only minor differences by sintering temperature in fatigue crack propagation rates.",
keywords = "Die attach, Fatigue crack propagation, Inelastic strain energy density range, Mechanical properties, Micro joining, Micro-scale FEA, Power device, Silver nanoparticles, Sintering temperature",
author = "Ryo Kimura and Yoshiharu Kariya and Noritsuka Mizumura and Koji Sasaki",
year = "2018",
month = "1",
day = "1",
doi = "10.2320/matertrans.M2017392",
language = "English",
volume = "59",
pages = "612--619",
journal = "Materials Transactions",
issn = "1345-9678",
publisher = "Japan Institute of Metals (JIM)",
number = "4",

}

TY - JOUR

T1 - Effect of sintering temperature on fatigue crack propagation rate of sintered Ag nanoparticles

AU - Kimura, Ryo

AU - Kariya, Yoshiharu

AU - Mizumura, Noritsuka

AU - Sasaki, Koji

PY - 2018/1/1

Y1 - 2018/1/1

N2 - In this study, the effect of sintering temperatures on fatigue crack propagation rates of sintered Ag nanoparticles were investigated. Paris' law type fatigue crack propagation law between the fatigue crack propagation rate and the inelastic strain energy density range was found to hold at all test temperatures. The power exponent in the fatigue crack propagation law for the Ag nanoparticles sintered at 423 K was large and the fatigue crack propagation rate was fast with excessively brittle behavior. The stress and strain concentrations at neck parts interlinked with each other in damaged areas, in addition to the brittle grain boundary fractures, resulted in the excessively brittle behavior. On the other hand, the Ag nanoparticles sintered at 473 K showed more ductile behavior as pores decreases with sintering progression and the local strain concentrations were fewer compared to the Ag nanoparticles sintered at 423 K. However, with test temperature increasing, the grain boundary became viscous, so the power exponent in the fatigue crack propagation law and fatigue crack propagation rate at any sintering temperature decreased, causing only minor differences by sintering temperature in fatigue crack propagation rates.

AB - In this study, the effect of sintering temperatures on fatigue crack propagation rates of sintered Ag nanoparticles were investigated. Paris' law type fatigue crack propagation law between the fatigue crack propagation rate and the inelastic strain energy density range was found to hold at all test temperatures. The power exponent in the fatigue crack propagation law for the Ag nanoparticles sintered at 423 K was large and the fatigue crack propagation rate was fast with excessively brittle behavior. The stress and strain concentrations at neck parts interlinked with each other in damaged areas, in addition to the brittle grain boundary fractures, resulted in the excessively brittle behavior. On the other hand, the Ag nanoparticles sintered at 473 K showed more ductile behavior as pores decreases with sintering progression and the local strain concentrations were fewer compared to the Ag nanoparticles sintered at 423 K. However, with test temperature increasing, the grain boundary became viscous, so the power exponent in the fatigue crack propagation law and fatigue crack propagation rate at any sintering temperature decreased, causing only minor differences by sintering temperature in fatigue crack propagation rates.

KW - Die attach

KW - Fatigue crack propagation

KW - Inelastic strain energy density range

KW - Mechanical properties

KW - Micro joining

KW - Micro-scale FEA

KW - Power device

KW - Silver nanoparticles

KW - Sintering temperature

UR - http://www.scopus.com/inward/record.url?scp=85045118992&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85045118992&partnerID=8YFLogxK

U2 - 10.2320/matertrans.M2017392

DO - 10.2320/matertrans.M2017392

M3 - Article

AN - SCOPUS:85045118992

VL - 59

SP - 612

EP - 619

JO - Materials Transactions

JF - Materials Transactions

SN - 1345-9678

IS - 4

ER -