銅合金的高溫機械特性

High Temperature Mechanical Properties of the Copper Alloy

陳大智(Da-Chih Chen) ； 向志偉(Chih-Wei Hsiang)

《國立宜蘭大學工程學刊》 7期 (2011/12) Pp. 1-17

https://doi.org/10.6176/BCE.2011.07.11

摘要

本研究目的針對CnSn 0.15%銅合金線的高溫機械特性進行實驗分析，由實驗的結果可得到不同溫度下的抗拉強度、真應力真應變圖，然後再將不同溫度的數據製成圖表，利用曲線擬合（Curve Fitting）的方式找出在各個溫度真應力真應變曲線的擬合方程式。實驗結果發現抗拉強度隨溫度的上升而下降，伸長率則是當合金銅達到銅的再結晶溫度後會大幅的增加。本研究所提供的溫度與真應變真應力擬合方程式，為合金銅之高溫機械特性的關係式，經由擬合方程式可由溫度迅速的取得該溫度下之真應變真應力的圓形，並將所得的數據提供數值模擬分析使用。

關鍵字

應變硬化指數 ； 高溫拉伸 ； CuSn 0.15%銅錫合金線

並列摘要

The high temperature mechanical properties of CuSn 0.15% copper alloy wire are presented in this paper. The high temperature tensile strength with respect to the true strains show in different temperatures from environment temperature 25°C to 600°C. The curve-fitting method is used to achieve the mathematical relation equations for those true stress strain curves. From the true stress strain curves, one can clearly to see the tensile strength decreases while the environment temperature raised and the elongation rates of copper alloy will increase while the environment temperature exceed the recrystallization temperature of the CuSn 0.15% copper alloy. The curve fitted mathematical relation equations for the true stress strain relations of the copper alloy are in terms of temperature only. Therefore one can have the mechanical properties of the CuSn 0.15% copper alloy by putting the required temperature to these curve fitted mathematical relationships.

並列關鍵字

Strain hardening exponent ； High-temperature tensile test ； CuSn 0.15 % copper alloy wire