Phase transformation in Cu-Cr-Zr-Mg alloy

Juanhua Su; Ping Liu; Hejun Li; Fengzhang Ren; Qiming Dong

doi:10.1016/j.matlet.2007.03.085

Phase transformation in Cu-Cr-Zr-Mg alloy

Juanhua Su, Ping Liu, Hejun Li, Fengzhang Ren, Qiming Dong

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

85 Scopus citations

Abstract

After solid solution treatment, the effects of aging processes on the microstructure and electrical conductivity of Cu-Cr-Zr-Mg lead frame alloy were investigated in order to determine the phase transformation and the time-temperature-transformation (TTT) behavior. The results show that aged at 470 °C the fine precipitation of an ordered CrCu₂(Zr,Mg) phase is found in copper matrix as well as fine Cr and Cu₄Zr, aged at 550 °C the phase CrCu₂(Zr,Mg) is decomposed into Cu₄Zr and Cr phase, aged at 600 °C the precipitates is bcc Cr only. The phase transformation kinetics equation was deduced from the Avrami empirical formula based on the linear relationship between the electrical conductivity and the volume fraction of the phase transformation.

Original language	English
Pages (from-to)	4963-4966
Number of pages	4
Journal	Materials Letters
Volume	61
Issue number	27
DOIs	https://doi.org/10.1016/j.matlet.2007.03.085
State	Published - Nov 2007

Keywords

Conductivity
Cu-Cr-Zr-Mg alloy
Phase transformation
TTT curves

Access to Document

10.1016/j.matlet.2007.03.085

Cite this

@article{1449549eb9004c48bed2ad1bec8c7dd8,

title = "Phase transformation in Cu-Cr-Zr-Mg alloy",

abstract = "After solid solution treatment, the effects of aging processes on the microstructure and electrical conductivity of Cu-Cr-Zr-Mg lead frame alloy were investigated in order to determine the phase transformation and the time-temperature-transformation (TTT) behavior. The results show that aged at 470 °C the fine precipitation of an ordered CrCu2(Zr,Mg) phase is found in copper matrix as well as fine Cr and Cu4Zr, aged at 550 °C the phase CrCu2(Zr,Mg) is decomposed into Cu4Zr and Cr phase, aged at 600 °C the precipitates is bcc Cr only. The phase transformation kinetics equation was deduced from the Avrami empirical formula based on the linear relationship between the electrical conductivity and the volume fraction of the phase transformation.",

keywords = "Conductivity, Cu-Cr-Zr-Mg alloy, Phase transformation, TTT curves",

author = "Juanhua Su and Ping Liu and Hejun Li and Fengzhang Ren and Qiming Dong",

year = "2007",

month = nov,

doi = "10.1016/j.matlet.2007.03.085",

language = "英语",

volume = "61",

pages = "4963--4966",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

number = "27",

}

TY - JOUR

T1 - Phase transformation in Cu-Cr-Zr-Mg alloy

AU - Su, Juanhua

AU - Liu, Ping

AU - Li, Hejun

AU - Ren, Fengzhang

AU - Dong, Qiming

PY - 2007/11

Y1 - 2007/11

N2 - After solid solution treatment, the effects of aging processes on the microstructure and electrical conductivity of Cu-Cr-Zr-Mg lead frame alloy were investigated in order to determine the phase transformation and the time-temperature-transformation (TTT) behavior. The results show that aged at 470 °C the fine precipitation of an ordered CrCu2(Zr,Mg) phase is found in copper matrix as well as fine Cr and Cu4Zr, aged at 550 °C the phase CrCu2(Zr,Mg) is decomposed into Cu4Zr and Cr phase, aged at 600 °C the precipitates is bcc Cr only. The phase transformation kinetics equation was deduced from the Avrami empirical formula based on the linear relationship between the electrical conductivity and the volume fraction of the phase transformation.

AB - After solid solution treatment, the effects of aging processes on the microstructure and electrical conductivity of Cu-Cr-Zr-Mg lead frame alloy were investigated in order to determine the phase transformation and the time-temperature-transformation (TTT) behavior. The results show that aged at 470 °C the fine precipitation of an ordered CrCu2(Zr,Mg) phase is found in copper matrix as well as fine Cr and Cu4Zr, aged at 550 °C the phase CrCu2(Zr,Mg) is decomposed into Cu4Zr and Cr phase, aged at 600 °C the precipitates is bcc Cr only. The phase transformation kinetics equation was deduced from the Avrami empirical formula based on the linear relationship between the electrical conductivity and the volume fraction of the phase transformation.

KW - Conductivity

KW - Cu-Cr-Zr-Mg alloy

KW - Phase transformation

KW - TTT curves

UR - http://www.scopus.com/inward/record.url?scp=34548726812&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2007.03.085

DO - 10.1016/j.matlet.2007.03.085

M3 - 文章

AN - SCOPUS:34548726812

SN - 0167-577X

VL - 61

SP - 4963

EP - 4966

JO - Materials Letters

JF - Materials Letters

IS - 27

ER -

Phase transformation in Cu-Cr-Zr-Mg alloy

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this