Influence of Laser Power on the Microstructure and Properties of 316L Stainless Steel Fabricated by CMT Arc Additive Manufacturing

CHEN Dalin; SONG Xueping; ZHAO Qingshan; GAO Xiaofei

doi:10.7512/j.issn.1001-2303.2025.02.04

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Influence of Laser Power on the Microstructure and Properties of 316L Stainless Steel Fabricated by CMT Arc Additive Manufacturing
Vol. 55, Issue 2, Pages: 39-45(2025)
Received：04 November 2024，

Revised：27 November 2024，

Published：20 February 2025
DOI： 10.7512/j.issn.1001-2303.2025.02.04
稿件说明：

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陈大林，宋学平，赵青山，等.激光功率对CMT电弧增材制造316L不锈钢组织与性能的影响［J］.电焊机，2025，55（2）：39-45. DOI： 10.7512/j.issn.1001-2303.2025.02.04.

CHEN Dalin, SONG Xueping, ZHAO Qingshan, et al.Influence of Laser Power on the Microstructure and Properties of 316L Stainless Steel Fabricated by CMT Arc Additive Manufacturing[J].Electric Welding Machine, 2025, 55(2): 39-45. DOI： 10.7512/j.issn.1001-2303.2025.02.04.

摘要

研究激光功率对CMT电弧增材制造316L不锈钢组织与性能的影响，可以为优化该技术制备316L不锈钢零件提供理论依据。采用316L不锈钢焊丝作为原材料，在不同激光功率下进行CMT电弧增材制造，制备单墙体试样。通过光学显微镜、扫描电镜、能谱仪、维氏硬度计和拉伸试验机等设备，对试样的微观组织、相组成、硬度和拉伸性能进行分析。结果表明：316不锈钢单墙体微观组织主要由δ铁素体和γ奥氏体组成，中部区域微观组织为树枝晶；激光功率对316L不锈钢的组织和性能有显著影响，随着激光功率的增大，树枝晶间距增大，δ铁素体含量先增加后减少，抗拉强度先增大后减小，延伸率逐渐减小；当激光功率为400 W时，单墙体中δ铁素体的含量最高，由于δ铁素体具有阻碍晶界、提高强度的作用，其抗拉强度最大值达561.8 MPa，且能保持48.7%的塑性。同时，单墙体硬度值沿堆积方向呈先下降后稍微上升的趋势，当激光功率为400 W时，维氏硬度最大值达194.7 HV0.3。

Abstract

This study aims to investigate the effect of laser power on the microstructure and properties of 316L stainless steel fabricated by CMT arc additive manufacturing

providing a theoretical basis for optimizing the technology to produce 316L stainless steel components. 316L stainless steel welding wire was used as the raw material

and single-wall samples were prepared under different laser powers using CMT arc additive manufacturing. The microstructure

phase composition

hardness

and tensile properties of the samples were analyzed using optical microscopy

scanning electron microscopy

energy spectrometer

Vickers hardness tester

and tensile testing machine. The results show that laser power has a significant impact on the microstructure and properties of 316L stainless steel. The microstructure of 316 stainless steel single-wall is mainly composed of δ-ferrite and γ-austenite

with the central region being dendritic crystals. As the laser power increases

the distance between dendritic crystals increases

the content of δ-ferrite first increases and then decreases

the tensile strength first increases and then decreases

and the elongation rate gradually decreases. When the laser power is 400 W

the content of δ-ferrite in the single-wall is the highest. Since δ-ferrite has the effect of hindering grain boundary movement to improve strength

its tensile strength reaches a maximum value of 561.8 MPa

and it can maintain 48.7% plasticity. At the same time

the hardness value of the single-wall shows a slight downward trend along the stacking direction

and when the laser power is 400 W

the Vickers hardness reaches a maximum value of 194.7 HV0.3.

关键词

Keywords

references

蒋华臻，彭爽，胡琦芸，等 . 激光熔化沉积制备316L不锈钢的电化学腐蚀及空化腐蚀性能［J］. 金属学报， 2024 （ 11 ）： 1512 - 1530 .

JIANG H Z ， PENG S ， HU Q Y ， et al . Corrosion and Cavitation Erosion Resistance of 316L Stainless Steels Produced by Laser Metal Deposition ［J］. Acta Metallurgica Sinica ， 2024 （ 11 ）： 1512 - 1530 .

赵东升，龙代发，牛堂仁，等 . 316L不锈钢电弧增材制造的微观组织和力学性能［J］. 船舶工程， 2022 ， 44 （ 09 ）： 14 - 17 .

ZHAO D S ， LONG D F ， NIU R T ， et al . Microstructure and Mechanical Properties of 316L Stainless Steel Wall Fabricated by Wire Arc Additive Manufacturing ［J］. Ship Engineering ， 2022 ， 44 （ 09 ）： 14 - 17 .

陈晓晖，张述泉，冉先喆，等 . 电弧功率对MIG电弧增材制造316L奥氏体不锈钢组织及力学性能的影响［J］. 焊接学报， 2020 ， 41 （ 05 ）： 42 - 49 .

CHEN X H ， ZHANG S Q ， RAN X J ， et al . Effect of arc power on microstructure and mechanical properties of austenitic stainless steel 316L fabricated by high efficient arc additive manufacturing ［J］. Transactions of The China Welding Institution ， 2020 ， 41 （ 05 ）： 42 - 49 .

邱贺方，侯笑晗，郭晓辉，等 . 电弧增材制造薄壁件形状控制研究进展［J］. 材料导报， 2024 ， 38 （ 06 ）： 197 - 210 .

QIU H F ， HOU X H ， GUO X H ， et al . Progress in Shape Control of Thin-walled Parts for Wire and Arc Additive Manufacturing ［J］. Materials Reports ， 2024 ， 38 （ 06 ）： 197 - 210 .

王树文，陈树君，赵骐跃，等 . 高强铝合金电弧增材制造的研究进展［J］. 材料工程， 2024 ， 52 （ 07 ）： 1 - 14 .

WANG S W ， CHEN S J ， ZHAO Q Y ， et al . Research progress in arc additive manufacturing of high-strength aluminum alloys ［J］. Journal of Materials Engineering ， 2024 ， 52 （ 07 ）： 1 - 14 .

韩启飞，狄兴隆，郭跃岭，等 . 电弧熔丝增材制造Mg/Mg双金属的组织与力学性能［J/OL］. 金属学报， 1 - 20 ［ 2024-11-04 ］.

HAN Q F ， DI X L ， GUO Y L ， et al . Microstructure and mechanical properties of Mg/Mg bimetallic fabricated by arc fuse additive manufacturing ［J］. Acta Metallurgica Sinica ， 1 - 20 ［ 2024-11-04 ］.

季文彬，吴润禾，戴士杰，等 . 激光增材制造WC-12Co硬质合金圆柱形内部结构及其微波后处理［J/OL］. 复合材料学报， 1 - 12 ［ 2024-11-04 ］.

JI W B ， WU R H ， DAI S J ， et al . Laser additive manufacturing of cylindrical internal structure of WC-12Co hard alloy and its microwave post-treatment ［J/OL］. Acta Materiae Compositae Sinica ， 1 - 12 ［ 2024-11-04 ］.

周全，张学哲， Lu Shenglu ，等 . 电子束增材制造不同铁含量Ti-1Al-8V-5Fe合金的组织及力学性能（英文）［J/OL］. Transactions of Nonferrous Metals Society of China ， 1 - 19 ［ 2024-11-04 ］.

Nsstrm J ， Frank Brückner ， Kaplan A F H . Measuring the effects of a laser beam on melt pool fluctuation in arc additive manufacturing ［J］. Rapid Prototyping Journal ， 2018 ， 25 （ 3 ）： 488 - 495 .

李旭文，宋刚，张兆栋，等 . 激光诱导电弧复合增材制造316L不锈钢的组织和性能［J］. 中国激光， 2019 ， 46 （ 12 ）： 93 - 101 ．

LI X W ， SONG G ， ZHANG Z D ， et al . Microstructure and Properties of 316 Stainless Steel Produced by Laser-Induced Arc Hybrid Additive Manufacturing ［J］. Chinese Journal of Lasers ， 2019 ， 46 （ 12 ）： 93 - 101 ．

Zhang Z ， Sun C ， Xu X ， et al . Surface quality and forming characteristics of thin-wall aluminium alloy parts manufactured by laser assisted MIG arc additive manufacturing ［J］. International Journal of Lightweight Materials & Manufacture ， 2018 ， 1 （ 2 ）： 89 - 95 .

Saha S ， Mukherjee M ， Pal T K . Microstructure，Texture，and Mechanical Property Analysis of Gas Metal Arc Welded AISI 304 Austenitic Stainless Steel ［J］. Journal of Materials Engineering and Performance ， 2015 ， 24 （ 3 ）： 1125 - 1139 .

张正浩，王传强，齐恩语，等 . 核级高硅含钛不锈钢激光-电弧复合焊接工艺及接头组织性能［J］. 中国激光， 2021 ， 48 （ 14 ）： 1402008 .

ZHANG Z H ， WANG C Q ， QI E Y ， et al . Laser-Arc Hybrid Welding Process and Joint Microstructure and Properties of Nuclear Grade High Silicon Titanium-containing Stainless Steel ［J］. Chinese Journal of Lasers ， 2021 ， 48 （ 14 ）： 75 - 85 .

任香会，梁文奇，王瑞超，等 . 焊接模式对电弧增材制造316不锈钢组织及力学性能的影响［J］. 焊接学报， 2024 ， 45 （ 04 ）： 79 - 85+92 .

REN X H ， LIANG W Q ， WANG R C ， et al . Effects of different welding modes on microstructure and mechanical properties of 316 stainless steel by wire arc additive manufacturing ［J］. Transactions of The China Welding Institution ， 2024 ， 45 （ 04 ）： 79 - 85+92 .

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