Scholarlink

<p>The microstructure, mechanical properties, and corrosion resistance of continuous variable cross-section extruded Mg-1.5Zn-0.3Mn-xY (0 ≤ x ≤ 4.0&#xa0;wt.%) alloys were investigated. Results indicate that complete DRX occurs in the alloys when extruded at 380&#xa0;°C, an extrusion ratio of 7.72, and an extrusion rate of 4&#xa0;mm/s. With increasing Y content, the average grain size decreases rapidly initially and then slows. When Y content exceeds 2.5&#xa0;wt.%, nanosized spherical Mg<sub>2</sub>Zn<sub>3</sub> second phase particles begin to precipitate in the alloy. Concurrently, fragmented Mg<sub>3</sub>Y<sub>2</sub>Zn<sub>3</sub> second phase particles emerge, and their quantity and size gradually increase with rising Y content. The mechanical properties and corrosion resistance of the alloy increase first and then decrease with the increase of Y content. When the Y content is 2.5&#xa0;wt.%, the alloy has excellent mechanical properties under the combined action of fine grain strengthening, solid solution strengthening and second phase strengthening. When the Y content is 2.0&#xa0;wt.%, the alloy has favorable corrosion resistance under the protection of dense Y<sub>2</sub>O<sub>3</sub> film.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Microstructures, Mechanical Properties and Corrosion Resistance of Mg-1.5Zn-0.3Mn-xY (0 ≤ x ≤ 4.0 wt.%) Alloys through Continuous Variable Cross-Section Extrusion

  • 期刊论文

  • 发表日期：

    2026年7月31日

查看全文
  • Huai Yao,
  • Xueying Zhang,
  • Yanchun Zhao,
  • Yanfeng Zhu,
  • Marko Huttula,
  • Wei Cao

摘要

The microstructure, mechanical properties, and corrosion resistance of continuous variable cross-section extruded Mg-1.5Zn-0.3Mn-xY (0 ≤ x ≤ 4.0 wt.%) alloys were investigated. Results indicate that complete DRX occurs in the alloys when extruded at 380 °C, an extrusion ratio of 7.72, and an extrusion rate of 4 mm/s. With increasing Y content, the average grain size decreases rapidly initially and then slows. When Y content exceeds 2.5 wt.%, nanosized spherical Mg2Zn3 second phase particles begin to precipitate in the alloy. Concurrently, fragmented Mg3Y2Zn3 second phase particles emerge, and their quantity and size gradually increase with rising Y content. The mechanical properties and corrosion resistance of the alloy increase first and then decrease with the increase of Y content. When the Y content is 2.5 wt.%, the alloy has excellent mechanical properties under the combined action of fine grain strengthening, solid solution strengthening and second phase strengthening. When the Y content is 2.0 wt.%, the alloy has favorable corrosion resistance under the protection of dense Y2O3 film.