Effect of trace cerium addition on hot deformation behavior of ultrahigh-purity copper containing sulfur

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China Pub Date : 2025-03-01 DOI:10.1016/S1003-6326(24)66721-X

Ke-xing SONG , Yun-xiao HUA , Hai-tao LIU , Yan-min ZHANG , Chao-min ZHANG , Yan-jun ZHOU , Tao HUANG

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Abstract

The effects of trace cerium (Ce) addition on the microstructural and textural evolution and the dynamic recrystallization (DRX) of the ultrahigh-purity copper (Cu) containing small amounts of sulfur (S) were investigated using a Gleeble−1500 thermal simulation tester at 600 °C. The results show that with increasing Ce content, the grain size of the Cu−S (S2) alloy gradually decreases and the grain boundary embrittlement induced by S impurities is considerably inhibited. The addition of Ce promotes the DRX process of the S2 alloy and changes its DRX mechanism from discontinuous to continuous and twinning-induced DRX mechanisms. The texture component and intensity of the S2 alloy vary with the increase of Ce content. The addition of 120×10⁻⁶ Ce (mass fraction) is favorable for the grain orientation randomization, which is attributed to the promoted DRX.

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微量铈对含硫超高纯铜热变形行为的影响

采用Gleeble−1500热模拟实验仪，研究了微量铈（Ce）对含少量硫(S)的超高纯度铜（Cu）在600℃下的显微组织、织构演变和动态再结晶（DRX）的影响。结果表明：随着Ce含量的增加，Cu−S （S2）合金的晶粒尺寸逐渐减小，S杂质引起的晶界脆化得到明显抑制；Ce的加入促进了S2合金的DRX过程，使其DRX机制由不连续转变为连续和孪晶诱导的DRX机制。随着Ce含量的增加，S2合金的织构成分和强度发生变化。120×10−6 Ce（质量分数）的加入有利于晶粒取向的随机化，这是由于促进了DRX。

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来源期刊

Transactions of Nonferrous Metals Society of China 工程技术-冶金工程

CiteScore

7.40

自引率

17.80%

发文量

8456

审稿时长

3.6 months

期刊介绍： The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.