Effects of annealing temperature on mechanical properties and corrosion behaviors of biodegradable Mg−3Zn−0.2Ca−2Ag alloy wires

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

Transactions of Nonferrous Metals Society of China Pub Date : 2025-05-01 DOI:10.1016/S1003-6326(25)66762-8

Qing-hui WANG , Shan-shan LIANG , Fu-song YUAN , Bo PAN , Peng-fei SUN , Jin-hui WANG , Bo-yu LIU , Hong-xiang LI

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Abstract

In response to the interest in degradable magnesium staples for oral and maxillofacial surgical procedures, high-performance Mg−3Zn−0.2Ca−2Ag alloy wires were reported. The impact of annealing temperature on the mechanical properties and corrosion behavior of the alloy wires was investigated. Results indicated that an increased annealing temperature led to grain growth, reduced the volume fraction of the second phase, and lowered dislocation density, causing decreased strength. The alloy annealed at 150 °C exhibited the highest elongation (19.6%) due to uniform and fine grains, along with lower dislocation density. Microscopic observation, and electrochemical and immersion tests highlighted the significant influence of annealing temperature on corrosion rates. Alloy wires annealed at 150 °C demonstrated superior corrosion resistance, which is attributed to small and uniform grains, low stress, and a well-distributed nano-second phase. Finally, the alloy wires annealed at 150 °C exhibited enhanced comprehensive properties, making them good candidates for degradable staples.

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退火温度对可生物降解Mg−3Zn−0.2Ca−2Ag合金丝力学性能和腐蚀行为的影响

为了响应对口腔颌面外科手术中可降解镁钉的兴趣，报道了高性能Mg−3Zn−0.2Ca−2Ag合金丝。研究了退火温度对合金丝力学性能和腐蚀行为的影响。结果表明：退火温度升高，晶粒长大，第二相体积分数降低，位错密度降低，导致强度下降；在150℃退火后，由于晶粒均匀细小，且位错密度较低，合金的伸长率最高（19.6%）。微观观察、电化学和浸渍试验表明，退火温度对腐蚀速率有显著影响。合金丝在150℃退火后，由于晶粒细小均匀、应力低、纳米秒相分布均匀，具有优异的耐蚀性。最后，合金丝在150°C退火后表现出增强的综合性能，使其成为可降解钉的良好候选材料。

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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.