Article(id=1236327385805673447, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236327378968965364, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2023.05.036, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1682092800000, receivedDateStr=2023-04-22, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1772693018628, onlineDateStr=2026-03-05, pubDate=1696089600000, pubDateStr=2023-10-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1772693018628, onlineIssueDateStr=2026-03-05, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1772693018628, creator=13701087609, updateTime=1772693018628, updator=13701087609, issue=Issue{id=1236327378968965364, tenantId=1146029695717560320, journalId=1235980550691926019, year='2023', volume='43', issue='5', pageStart='1', pageEnd='177', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1772693016997, creator=13701087609, updateTime=1772693111855, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1236327776882577759, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236327378968965364, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1236327776882577760, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236327378968965364, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=159, endPage=163, ext={EN=ArticleExt(id=1236327388313866309, articleId=1236327385805673447, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Effect of Laser Scanning Speed on Microstructure and Hardness of Laser Cladded 316L Coating, columnId=1236276108207902848, journalTitle=Mining and Metallurgical Engineering, columnName=MATERIALS, runingTitle=null, highlight=null, articleAbstract=

316L stainless steel coatings were prepared on the surface of 304 stainless steel by using laser cladding at different scanning speed, and then metallographic microscopy, X-ray diffractometer, scanning electron microscopy and microhardness tester were adopted respectively to investigate the macroscopic morphology, phase composition, microscopic structure and microhardness for the coatings. The results showed that the 316L coating had a single-phase austenitic structure, and as the scanning speed increased, the grain size of the coating became smaller due to the reduction in the laser power density and heat input, and an increase in the cooling speed. It is found that the microhardness of the coatings is positively correlated with scanning speed, and the 316L coatings prepared by laser cladding at a scanning speed of 1 400 mm/min presents the highest microhardness of about 275HV0.3. The improvement of the microhardness of the coating is ascribed to the effect of solid solution strengthening caused by lattice distortion combined with the effect of fine crystal strengthening. The wear test showed that the average friction coefficient of 316L coatings was significantly lower than that of 304 stainless steel substrate. And the 316L coating prepared by laser cladding at 1 400 mm/min has a friction coefficient of 0.424 and wear rate of 2.29 × 10-6 mm3/(N·m), and is prone to abrasive wear.

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采用不同激光扫描速度在304不锈钢表面制备了316L熔覆层,通过金相显微镜、X射线衍射仪、扫描电镜及显微硬度计分别对316L熔覆层宏观形貌、相组成、微观组织及显微硬度进行研究。结果表明,316L熔覆层呈单相奥氏体结构,随着扫描速度升高,激光功率密度降低,热输入减小,冷却速度加快,熔覆层晶粒尺寸减小。熔覆层显微硬度与扫描速度成正相关,其中扫描速度1 400 mm/min制备的316L熔覆层显微硬度最高,为275HV0.3。熔覆层显微硬度的升高是晶格畸变导致的固溶强化和细晶强化的协同作用引起的。磨损试验结果表明,316L熔覆层平均摩擦系数显著低于304不锈钢基体,扫描速度1 400 mm/min制备的316L熔覆层摩擦系数为0.424,磨损率为2.29 × 10-6 mm3/(N·m),磨损机理为磨粒磨损。

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贺天柱(1973—),男,河北宣化人,高级讲师,主要研究方向为机械加工、激光增材制造及先进制造。

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贺天柱(1973—),男,河北宣化人,高级讲师,主要研究方向为机械加工、激光增材制造及先进制造。

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扫描速度对车用316L不锈钢熔覆层组织及力学性能的影响
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贺天柱 1 , 吴喆 1 , 张成武 2 , 陈东升 3
矿冶工程杂志 | 材料 2023,43(5): 159-163
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矿冶工程杂志 | 材料 2023, 43(5): 159-163
扫描速度对车用316L不锈钢熔覆层组织及力学性能的影响
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贺天柱1, 吴喆1, 张成武2, 陈东升3
作者信息
  • 1.河北省机电工程技师学院,河北 张家口 075000
  • 2.南华大学机械工程学院,湖南 衡阳 421001
  • 3.上汽大众汽车有限公司,上海 201805
  • 贺天柱(1973—),男,河北宣化人,高级讲师,主要研究方向为机械加工、激光增材制造及先进制造。

Effect of Laser Scanning Speed on Microstructure and Hardness of Laser Cladded 316L Coating
Tianzhu HE1, Zhe WU1, Chengwu ZHANG2, Dongsheng CHEN3
Affiliations
  • 1.Hebei Institute of Mechanical and Electrical Engineering Technician, Zhangjiakou 075000, Hebei, China
  • 2.School of Mechanical Engineering, University of South China, Hengyang 421001, Hunan, China
  • 3.SAIC Volkswagen Automotive Co Ltd, Shanghai 201805, China
出版时间: 2023-10-01 doi: 10.3969/j.issn.0253-6099.2023.05.036
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采用不同激光扫描速度在304不锈钢表面制备了316L熔覆层,通过金相显微镜、X射线衍射仪、扫描电镜及显微硬度计分别对316L熔覆层宏观形貌、相组成、微观组织及显微硬度进行研究。结果表明,316L熔覆层呈单相奥氏体结构,随着扫描速度升高,激光功率密度降低,热输入减小,冷却速度加快,熔覆层晶粒尺寸减小。熔覆层显微硬度与扫描速度成正相关,其中扫描速度1 400 mm/min制备的316L熔覆层显微硬度最高,为275HV0.3。熔覆层显微硬度的升高是晶格畸变导致的固溶强化和细晶强化的协同作用引起的。磨损试验结果表明,316L熔覆层平均摩擦系数显著低于304不锈钢基体,扫描速度1 400 mm/min制备的316L熔覆层摩擦系数为0.424,磨损率为2.29 × 10-6 mm3/(N·m),磨损机理为磨粒磨损。

激光熔覆  /  显微硬度  /  316L不锈钢  /  扫描速度  /  耐磨性  /  熔覆层

316L stainless steel coatings were prepared on the surface of 304 stainless steel by using laser cladding at different scanning speed, and then metallographic microscopy, X-ray diffractometer, scanning electron microscopy and microhardness tester were adopted respectively to investigate the macroscopic morphology, phase composition, microscopic structure and microhardness for the coatings. The results showed that the 316L coating had a single-phase austenitic structure, and as the scanning speed increased, the grain size of the coating became smaller due to the reduction in the laser power density and heat input, and an increase in the cooling speed. It is found that the microhardness of the coatings is positively correlated with scanning speed, and the 316L coatings prepared by laser cladding at a scanning speed of 1 400 mm/min presents the highest microhardness of about 275HV0.3. The improvement of the microhardness of the coating is ascribed to the effect of solid solution strengthening caused by lattice distortion combined with the effect of fine crystal strengthening. The wear test showed that the average friction coefficient of 316L coatings was significantly lower than that of 304 stainless steel substrate. And the 316L coating prepared by laser cladding at 1 400 mm/min has a friction coefficient of 0.424 and wear rate of 2.29 × 10-6 mm3/(N·m), and is prone to abrasive wear.

laser cladding  /  microhardness  /  316L stainless steel  /  scanning speed  /  wear resistance  /  laser cladded coating
贺天柱, 吴喆, 张成武, 陈东升. 扫描速度对车用316L不锈钢熔覆层组织及力学性能的影响. 矿冶工程杂志, 2023 , 43 (5) : 159 -163 . DOI: 10.3969/j.issn.0253-6099.2023.05.036
Tianzhu HE, Zhe WU, Chengwu ZHANG, Dongsheng CHEN. Effect of Laser Scanning Speed on Microstructure and Hardness of Laser Cladded 316L Coating[J]. Mining and Metallurgical Engineering, 2023 , 43 (5) : 159 -163 . DOI: 10.3969/j.issn.0253-6099.2023.05.036
  • 国家自然科学基金(51975270)
2023年第43卷第5期
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doi: 10.3969/j.issn.0253-6099.2023.05.036
  • 接收时间:2023-04-22
  • 首发时间:2026-03-05
  • 出版时间:2023-10-01
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  • 收稿日期:2023-04-22
基金
国家自然科学基金(51975270)
作者信息
    1.河北省机电工程技师学院,河北 张家口 075000
    2.南华大学机械工程学院,湖南 衡阳 421001
    3.上汽大众汽车有限公司,上海 201805
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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