摩擦搅拌加工：用于汽车轻量化的高压压铸铝合金的热机械加工工具

IF 1.9 Q3 ENGINEERING, MANUFACTURING

Manufacturing Letters Pub Date : 2024-10-01 DOI:10.1016/j.mfglet.2024.09.061

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引用次数: 0

摘要

本研究采用摩擦搅拌加工（FSP）对高压压铸（HPDC）进行热机械加工，以改变微观结构并提高机械性能。FSP 在两种不同的 HPDC 铝合金上进行：(a) 通用、高铁 HPDC A380 合金；(b) 优质、低铁 HPDC Aural-5 薄壁平板合金。随后的机械测试表明，屈服强度和拉伸延展性分别提高了 30% 和 65%。此外，FSP 还使 A380 合金的疲劳寿命提高了 ∼ 10 倍，Aural-5 合金的断裂韧性提高了 ∼ 70%。这些发现强调了 FSP 对基于 HPDC 铝合金的结构组件的微观结构进行改性的能力，从而使其能够很好地结合强度、延展性、断裂韧性和高疲劳性能，以获得长期的耐用性和可靠性。

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Friction stir processing: A thermomechanical processing tool for high pressure die cast Al-alloys for vehicle light-weighting

This study uses friction stir processing (FSP) for thermomechanical processing of high-pressure die-casting (HPDC) to modify microstructure and improve mechanical properties. FSP is carried out on two different HPDC aluminum alloys: (a) general-purpose, high-iron, HPDC A380 alloy and (b) premium quality, low-iron HPDC Aural-5 alloy in thin wall, flat plate geometry. Subsequent mechanical testing shows ∼30 % and ∼65 % enhancement in yield strength and tensile ductility. In addition, FSP leads to ∼10 times improvement in fatigue life for A380 alloy and ∼70 % improvement in fracture toughness for Aural-5 alloy. These findings emphasize the capability of FSP to modify the microstructure of HPDC Al-alloys-based structural components so that they can demonstrate a good combination of strength, ductility, fracture toughness, and high fatigue properties for long-term durability and reliability.

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来源期刊

Manufacturing Letters Engineering-Industrial and Manufacturing Engineering

CiteScore

4.20

自引率

5.10%

发文量

192

审稿时长

60 days