Scholarlink

<p>To tackle the challenge of suboptimal bonding at the steel-aluminum interface, this investigation employed a superlattice structure to facilitate mechanical interlocking at the interface. This was complemented by initiating metallurgical reactions via vacuum solid–liquid composite manufacturing techniques, aimed at bolstering the interfacial bonding strength within the steel-aluminum dual-phase system. Experimental investigations delineated the impact of base element diffusion on interfacial metallurgical reactions at 538 °C, following solution treatments spanning 4, 8, and 12&#xa0;h. As the solution time was extended, there was a corresponding increase in the thickness of the metallurgical reaction layer, which comprises the diffusion layer (η-Fe<sub>2</sub>A1<sub>5</sub>) and the biphasic layer (Al<sub>67</sub>Cu<sub>20</sub>Fe<sub>13</sub>). The study probed the influence of time and temperature on the growth dynamics of the diffusion layer, characterized by a mixed-type growth mechanism. The analysis of tensile fracture behavior in the steel-aluminum dual-phase interpenetrating structure revealed that untreated samples displayed a two-stage tensile curve with a tensile strength of 59.3&#xa0;MPa, whereas heat-treated samples experienced direct fractures, achieving a tensile strength of 81.2&#xa0;MPa.</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

Effect of Heat Treatment on the Microstructural Characteristics and Mechanical Properties of Steel-Aluminum Interpenetrating Dual-Phase Interface

  • 期刊论文

  • 发表日期：

    2025年6月16日

查看全文
  • Chengze Li,
  • Yu Wang,
  • Haotian Fan,
  • Hong Xu,
  • Heqian Song,
  • Dan Zhang,
  • Chenglong Bi,
  • Wenpeng Shi

摘要

To tackle the challenge of suboptimal bonding at the steel-aluminum interface, this investigation employed a superlattice structure to facilitate mechanical interlocking at the interface. This was complemented by initiating metallurgical reactions via vacuum solid–liquid composite manufacturing techniques, aimed at bolstering the interfacial bonding strength within the steel-aluminum dual-phase system. Experimental investigations delineated the impact of base element diffusion on interfacial metallurgical reactions at 538 °C, following solution treatments spanning 4, 8, and 12 h. As the solution time was extended, there was a corresponding increase in the thickness of the metallurgical reaction layer, which comprises the diffusion layer (η-Fe2A15) and the biphasic layer (Al67Cu20Fe13). The study probed the influence of time and temperature on the growth dynamics of the diffusion layer, characterized by a mixed-type growth mechanism. The analysis of tensile fracture behavior in the steel-aluminum dual-phase interpenetrating structure revealed that untreated samples displayed a two-stage tensile curve with a tensile strength of 59.3 MPa, whereas heat-treated samples experienced direct fractures, achieving a tensile strength of 81.2 MPa.