Tribological, microstructural and surface characteristics of additively manufactured AlSi10Mg to sequential vibratory peening and heat treatment

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2025-05-20 DOI:10.1016/j.surfcoat.2025.132307

Ömer Saban , Mehmet Erdi Korkmaz , Okan Unal , Mustafa Sabri Gok , Azmi Erdoğan

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引用次数: 0

Abstract

Secondary operations are frequently necessary to address issues with components produced by selective laser melting (SLM), such as internal defects, stress accumulation, and rough surfaces. This study investigated the effects of T6 heat treatment (HT), vibratory peening (VP) on AlSi10Mg alloy at different temperatures and different durations and both single and multiple condition. The solution treatment temperature was applied at 400 °C, 450 °C and 500 °C and VP was applied for 2.5, 5, 10 and 20 min. The changes in microstructural, hardness and wear properties in as-built (AB), vibratory peened of AB (AB+VP), heat treated of AB (AB+HT) and heat treated/vibratory peened of AB (AB+HT+VP) samples were investigated. Though SLM left the microstructure unaffected, the existence of Si precipitates and their growth with increasing solution temperature suggested the necessity for heat treatment. Vibratory peening was used to harden the surfaces; the impact become more noticeable the longer the VP remained active. A more obvious hardness increase came at higher solution temperature. In every setting, VP increases wear resistance. Even although the HT samples' hardness had decreased, wear losses did, in fact, diminish considerably, especially following VP treatment.

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增材制造的AlSi10Mg经连续振动强化和热处理后的摩擦学、显微组织和表面特性

为了解决选择性激光熔化（SLM）产生的部件的问题，例如内部缺陷、应力积累和粗糙表面，经常需要进行二次操作。研究了T6热处理（HT）、振动强化（VP）对AlSi10Mg合金在不同温度、不同时间、单条件和多条件下的影响。分别在400℃、450℃和500℃固溶处理，VP分别处理2.5、5、10和20 min。研究了成形（AB）、AB振动强化（AB+VP）、AB热处理（AB+HT）和AB热处理/振动强化（AB+HT+VP）试样的显微组织、硬度和磨损性能的变化。虽然SLM对微观组织没有影响，但Si析出物的存在及其随固溶温度的升高而生长表明热处理的必要性。采用振动强化对表面进行强化；副总裁保持活跃的时间越长，这种影响就越明显。固溶温度越高，硬度增加越明显。在任何情况下，VP都能提高耐磨性。尽管高温试样的硬度降低了，但磨损损失实际上也大大减少了，尤其是在VP处理之后。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.