Research on the Microstructure and Performance Regulation of SLM 304 Steel Under Intermittent Deformation.

Huimin Tao, Linlin Ma, Bin Liao, Feng Liu, Yadong Li, Tingting Chen, Mingming Ding, Xiaomei Guo

Abstract read

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Article in Materials (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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8 authors.

Huimin TaoKey Laboratory of Key Technologies for Mechanical Industry Hydroelectric Power Generation Pump Turbine, Zhejiang Key Laboratory of Pumps and Turbines, Zhejiang Engineering Research Center of Advanced Water Conservancy Equipment, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China.

Linlin MaKey Laboratory of Special Equipment Safety Testing Technology of Zhejiang Province, Zhejiang Academy of Special Equipment Science, Hangzhou 310020, China.

Bin LiaoKey Laboratory of Key Technologies for Mechanical Industry Hydroelectric Power Generation Pump Turbine, Zhejiang Key Laboratory of Pumps and Turbines, Zhejiang Engineering Research Center of Advanced Water Conservancy Equipment, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China.

Feng LiuKey Laboratory of Key Technologies for Mechanical Industry Hydroelectric Power Generation Pump Turbine, Zhejiang Key Laboratory of Pumps and Turbines, Zhejiang Engineering Research Center of Advanced Water Conservancy Equipment, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China.

Yadong LiKey Laboratory of Key Technologies for Mechanical Industry Hydroelectric Power Generation Pump Turbine, Zhejiang Key Laboratory of Pumps and Turbines, Zhejiang Engineering Research Center of Advanced Water Conservancy Equipment, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China.

Tingting ChenKey Laboratory of Key Technologies for Mechanical Industry Hydroelectric Power Generation Pump Turbine, Zhejiang Key Laboratory of Pumps and Turbines, Zhejiang Engineering Research Center of Advanced Water Conservancy Equipment, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China.

Mingming DingKey Laboratory of Key Technologies for Mechanical Industry Hydroelectric Power Generation Pump Turbine, Zhejiang Key Laboratory of Pumps and Turbines, Zhejiang Engineering Research Center of Advanced Water Conservancy Equipment, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China.

Xiaomei GuoKey Laboratory of Key Technologies for Mechanical Industry Hydroelectric Power Generation Pump Turbine, Zhejiang Key Laboratory of Pumps and Turbines, Zhejiang Engineering Research Center of Advanced Water Conservancy Equipment, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China.

Funding

International Cooperation and Exchange Projects of the National Natural Science Foundation of China W2521089Key Research and Development Program of Zhejiang Province 2020C01062National Key R&D Program Project 2025YFE0102900Scientific Research Foundation of Zhejiang University of Water Resources and Electric Power JBGS2025013

6 · The paper itself

Abstract

This paper investigates the evolution of the microstructure, mechanical performances, and corrosion resistance of selective laser melting (SLM) 304 steel under different intermittent stretching deformation step sizes, revealing the underlying evolution patterns. The results indicate that the intermittent deformation step size significantly affects the microstructure and performance of SLM 304 steel. Larger step sizes result in more complete molten pool contours, less deformation of grain and cellular structures, and a lower martensite volume fraction; smaller step sizes lead to distorted molten pools, fragmented grains, exacerbated cellular structure distortion, and increased martensite content. In terms of mechanical performances, tensile strength, nano-hardness, and elastic modulus decrease with increasing step size, while elongation increases accordingly. Corrosion resistance improves with larger step sizes, with specimens exhibiting more complete and thicker oxide films on the surface and superior pitting resistance; continuous stretching specimens exhibit the worst corrosion resistance, while the original specimens are the best. Intermittent deformation optimizes properties by regulating microstructure, providing a basis for the design of high-performance SLM 304 steel. This study provides theoretical support for the design and application of additive manufacturing stainless steel components, facilitating the engineering and industrial application of SLM technology in high-end equipment manufacturing.

Indexed as

corrosion performanceintermittent deformationmechanical performancemicrostructureselective laser meltingstainless steel

Identifiers

PMID41976758

DOI10.3390/ma19071473

PMCPMC13074654

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LicenceCC BY

Read underepoch 390

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.