Aging Behavior of the Cu-2.8Ni-0.7Si Alloy Ribbons Prepared by Single Roller Spinning Quenching Method

Zhang Weiran; Geng Guihong; Liu Limeng; Zou Chenglu; Xue Penghao

doi:10.15980/j.tzzz.2016.11.031

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Aging Behavior of the Cu-2.8Ni-0.7Si Alloy Ribbons Prepared by Single Roller Spinning Quenching Method
Vol. 36, Issue 11, Pages: 1229-1232(2016)
Published： 2016 ，
DOI： 10.15980/j.tzzz.2016.11.031

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[1]张蔚冉,耿桂宏,刘利盟,邹成路,薛鹏皓.快速凝固Cu-2.8Ni-0.7Si合金薄带的时效相变行为[J].特种铸造及有色合金,2016,36(11):1229-1232.

Zhang Weiran, Geng Guihong, Liu Limeng, et al. Aging Behavior of the Cu-2.8Ni-0.7Si Alloy Ribbons Prepared by Single Roller Spinning Quenching Method. [J]. Special Casting & Nonferrous Alloys 36(11):1229-1232(2016)
[1]张蔚冉,耿桂宏,刘利盟,邹成路,薛鹏皓.快速凝固Cu-2.8Ni-0.7Si合金薄带的时效相变行为[J].特种铸造及有色合金,2016,36(11):1229-1232. DOI： 10.15980/j.tzzz.2016.11.031.

Zhang Weiran, Geng Guihong, Liu Limeng, et al. Aging Behavior of the Cu-2.8Ni-0.7Si Alloy Ribbons Prepared by Single Roller Spinning Quenching Method. [J]. Special Casting & Nonferrous Alloys 36(11):1229-1232(2016) DOI： 10.15980/j.tzzz.2016.11.031.

摘要

采用单辊旋淬快速凝固法制备了50

50μm厚的Cu-2.8Ni-0.7Si合金薄带

研究了时效温度和时效时间对其电导率和抗拉强度的影响。结果表明

在同一时效温度下

随着时效时间的延长

Cu-2.8Ni-0.7Si合金薄带的电导率不断增大

抗拉强度则是先升高后降低。时效峰值过后

抗拉强度下降的速度随时效温度的增大而增大。Cu-Ni-Si合金时效过程中

电导率增量与δ-Ni

Si相的析出量存在线性关系

通过测量电导率能确定δ-Ni

Si相的析出

确定了新相析出率的Avrami相变动力学方程和该铜合金薄带中δ-Ni

Si相析出的电导率方程

并计算拟合了析出相与时效时间的动力学曲线。

Abstract

Cu-based Cu-2.8Ni-0.7Si alloy ribbons with 50

50μm in thickness and smooth surface were prepared by single roller spinning quenching method.The ribbons prepared were heat treated at 400

00 ℃for varied time.Effects of the temperature and aging time on the electrical conductivity and tensile strength of the ribbons were investigated.The results reveal that electrical conductivity of the ribbons is increased gradually while tensile strength is increased firstly and then decreased with the aging time increase at the fixed temperature

and the tensile strength after peak aging is increased with the increase of aging temperature.The electrical conductivity of the ribbons is increased linearly with the contents ofδ-Ni

Si as the precipitation phase.Dynamics of theδ-Ni

Si phase formation was estimated by the Avrami equation

and electric conductivity equation of precipitatingδ-Ni

Si phase from the Cu alloy ribbons was determined.In addition

the dynamic curves of the relations between precipitation and aging times were calculated.