Scholarlink

<p>Hypereutectic Zn-Li alloys are a kind of high-strength biodegradable Zn alloys developed in recent years. However, they exhibit significant hot-rolling brittleness. The higher rolling temperature and the larger volume fraction of the brittle blocky <i>β</i> phases result in cleavage fracture easily. After warm rolling, the alloys become very ductile with dimple fracture. Abnormally, when the volume fraction of brittle β-LiZn<sub>4</sub> phase in alloys increases from 38.9 to 61.4 vol.%, elongation only decreases by 5%. The reason is that warm rolling induces the transition of <i>β</i> block to β/Zn lamellar structure, which exhibits a high resistance to crack propagation.</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

Origin of Hot-Rolling Brittleness and Abnormal Hot-Warm Rolling Ductility of Hypereutectic Zn-Li Alloys

  • 期刊论文

  • 发表日期：

    2026年8月3日

查看全文
  • Zhen Li,
  • Bingjun Liu,
  • Li Ma,
  • Jian Hou,
  • Jiancang Zhao,
  • Haoran Zheng,
  • Hongren Wang

摘要

Hypereutectic Zn-Li alloys are a kind of high-strength biodegradable Zn alloys developed in recent years. However, they exhibit significant hot-rolling brittleness. The higher rolling temperature and the larger volume fraction of the brittle blocky β phases result in cleavage fracture easily. After warm rolling, the alloys become very ductile with dimple fracture. Abnormally, when the volume fraction of brittle β-LiZn4 phase in alloys increases from 38.9 to 61.4 vol.%, elongation only decreases by 5%. The reason is that warm rolling induces the transition of β block to β/Zn lamellar structure, which exhibits a high resistance to crack propagation.