Scholarlink

<p>The creation of new Sn–6Zn–0.05Fe (SZF) Pb-free alloys with improved mechanical behavior via Co microalloying is examined in this work. The focus is on the formation of metastable CoSn<sub>2</sub>@CoZn<sub>7</sub> core–shell precipitation-strengthened SZF-0.1Co alloy with the other IMCs that inhibit the dislocation motion and exhibit a novel approach for improving strength–ductility trade-off in SZF alloys. Superior combination of excellent strength and ductility is attained by mechanical testing, such as high yield strength (45.5&#xa0;MPa), ultimate tensile strength (48.1&#xa0;MPa), and remarkable ductility (34.3%), which yields an improvement of approximately 25.3%, 23.6%, and 196% compared to SZF, respectively. This can be achieved by modulating the Co content ratio. Several Williamson–Hall models were used to assess the distinct effects of core–shell structure on intrinsic strain, crystallite size and energy density gained from X-ray characteristics. Moreover, CoSn<sub>2</sub>@CoZn<sub>7</sub> can successfully lower the crystallite size and internal strain of Co added SZF solders, both of which are probably essential preconditions for property control on metallic supplies. These effects could improve the softening resistance performance of future SZF solders and boost their elastic compliance.</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

A novel type of CoSn2@CoZn7 core–shell precipitation-strengthened Sn–6Zn–0.05Fe solder alloy with improved strength–ductility trade-off through Co microalloying

  • 期刊论文

  • 发表日期：

    2025年7月5日

查看全文
  • N. A. M. Eid,
  • Hind Alsnani,
  • A. A. El-Daly,
  • A. A. Ibrahiem

摘要

The creation of new Sn–6Zn–0.05Fe (SZF) Pb-free alloys with improved mechanical behavior via Co microalloying is examined in this work. The focus is on the formation of metastable CoSn2@CoZn7 core–shell precipitation-strengthened SZF-0.1Co alloy with the other IMCs that inhibit the dislocation motion and exhibit a novel approach for improving strength–ductility trade-off in SZF alloys. Superior combination of excellent strength and ductility is attained by mechanical testing, such as high yield strength (45.5 MPa), ultimate tensile strength (48.1 MPa), and remarkable ductility (34.3%), which yields an improvement of approximately 25.3%, 23.6%, and 196% compared to SZF, respectively. This can be achieved by modulating the Co content ratio. Several Williamson–Hall models were used to assess the distinct effects of core–shell structure on intrinsic strain, crystallite size and energy density gained from X-ray characteristics. Moreover, CoSn2@CoZn7 can successfully lower the crystallite size and internal strain of Co added SZF solders, both of which are probably essential preconditions for property control on metallic supplies. These effects could improve the softening resistance performance of future SZF solders and boost their elastic compliance.