通过轧制微合金化 Sm 实现 Mg-Al-Sn-Ca-Mn 合金的协同耐腐蚀性和机械性能

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2024-10-08 DOI:10.1016/j.corsci.2024.112502

Jiawei He , Dawei Wang , Fuyong Cao , Xun Zhang , Cheng Wang , Jin Xu , Xiaoli Zhou , Yajie Yang , Yipeng Gao , Min Zha

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引用次数: 0

摘要

将微钐合金化与四道旋转轧制耦合在一起，可协同提高镁铝锰钴锰合金的耐腐蚀性和机械性能。微Sm合金化可减弱电化学腐蚀。轧制过程细化了晶粒，强化了基底纹理，促进了第二相颗粒的分散，从而有助于形成均匀的腐蚀保护膜，并提高了机械强度和延展性。因此，轧制 Mg-Al-Sn-Ca-Mn-Sm 合金具有协同的机械性能和耐腐蚀性，即 UTS 为 271 兆帕，YS 为 204 兆帕，破坏伸长率为 18%，腐蚀速率低至 0.85 毫米 y-1。

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Micro-alloying of Sm with rolling for synergetic corrosion resistance and mechanical properties of Mg-Al-Sn-Ca-Mn alloys

Micro Sm alloying coupling with four-pass rotary rolling is conducted to synergize the corrosion resistance and mechanical properties of Mg-Al-Sn-Ca-Mn alloys. Micro Sm alloying weakens the galvanic corrosion. Rolling process refines the grains, intensifies the basal texture and promotes dispersed second phase particles, thereby contributing to forming a uniform and protective corrosion product film, and enhancing the mechanical strength and ductility. As a result, rolled Mg-Al-Sn-Ca-Mn-Sm alloy exhibits a synergy of mechanical properties and corrosion resistance, i.e., an UTS of 271 MPa, YS of 204 MPa, elongation to failure of 18 %, and a low corrosion rate of 0.85 mm y⁻¹.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.