Article(id=1254112845810045797, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1254112841712206109, articleNumber=null, orderNo=null, doi=10.3981/j.issn.1000-7857.2025.12.00112, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1766332800000, receivedDateStr=2025-12-22, revisedDate=1769270400000, revisedDateStr=2026-01-25, acceptedDate=null, acceptedDateStr=null, onlineDate=1776933402730, onlineDateStr=2026-04-23, pubDate=1776009600000, pubDateStr=2026-04-13, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1776933402730, onlineIssueDateStr=2026-04-23, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1776933402730, creator=13041195026, updateTime=1776933402730, updator=13041195026, issue=Issue{id=1254112841712206109, tenantId=1146029695717560320, journalId=1146031591421210625, year='2026', volume='44', issue='7', pageStart='1', pageEnd='128', issueExtLink='null', onlineDate='null', pubDate='1776009600000', pubDateStr='2026-04-13', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1776933401732, creator='13041195026', updateTime=1776934002915, updator='13041195026', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1254115363315191985, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1254112841712206109, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1254115363315191986, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1254112841712206109, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=91, endPage=102, ext={EN=ArticleExt(id=1254112847487767399, articleId=1254112845810045797, tenantId=1146029695717560320, journalId=1146031591421210625, language=EN, title=Effect of dissimilar wire arc additive manufacturing processes on the microstructure and mechanical properties of maraging steel, columnId=1150494644690366681, journalTitle=Science & Technology Review, columnName=Papers, runingTitle=null, highlight=null, articleAbstract=
To investigate the formation mechanism for differences in microstructure and properties of components fabricated via different wire arc additive manufacturing (WAAM) processes, maraging steel components were fabricated using plasma arc additive manufacturing (PAAM) and cold metal transfer (CMT)−based additive manufacturing. Their microstructures and mechanical properties were then systematically characterized and compared. The continuous and intense impingement of the plasma arc on the molten pool produced significantly finer grains, with an average grain size of 3.51 μm, whereas the average grain size of CMT−fabricated components was 9.84 μm. Additionally, the higher heat input and lower cooling rate during the PAAM process facilitated precipitation of a greater number of reinforcing phases within the matrix. Under the synergistic effect grain refinement strengthening and second−phase strengthening, PAAM components demonstrated superior mechanical properties: specifically, the tensile strengths in the horizontal and vertical directions were 1367.7 MPa and 1360.3 MPa, accompanied by elongations of 15.2% and 14.4%, respectively. In contrast, the CMT−fabricated samples exhibited tensile strengths of 1149.1 MPa (horizontal) and 1063.4 MPa (vertical), with corresponding elongations of 20.1% and 17.8%. Notably, while CMT−fabricated components displayed significant mechanical anisotropy, PAAM components exhibited a tendency toward mechanical isotropy. This phenomenon is attributed to two key factors: first, the extremely high heat input of PAAM ensured more adequate interlayer fusion; second, the recovery and recrystallization processes induced by the prolonged high−temperature state mitigated the preferred orientation of the microstructure, consequently alleviating mechanical anisotropy.
, authors=null, authorsList=Guan WANG, Qi ZHOU, Shun GUO, Junqiang XU, Kehong WANG, Zhen WANG, Wei CHEN, authorCompany=null, correspAuthors=Qi ZHOU, Shun GUO, authorNote=null, correspAuthorsNote=null, copyrightStatement=
All rights reserved. Unauthorized reproduction is prohibited., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1254112864982209435, articleId=1254112845810045797, tenantId=1146029695717560320, journalId=1146031591421210625, language=CN, title=不同电弧增材工艺对马氏体时效钢组织与力学性能的影响, columnId=1146540929516700224, journalTitle=科技导报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
为探究不同电弧增材工艺构件组织与性能差异的形成机理,采用等离子弧增材制造(plasma arc additive manufacturing,PAAM)和冷金属过渡(cold metal transfer,CMT)增材工艺对马氏体时效钢进行增材并表征分析了微观组织和力学性能。结果表明,PAAM热源对熔池持续强烈的冲击作用使其平均晶粒尺寸更小,为3.51 μm,而CMT构件平均晶粒尺寸为9.84 μm;同时,PAAM高热输入、低冷却速率使基体析出更多强化相。在细晶强化与第二相强化等强化机制共同作用下,PAAM构件具有更优异的力学性能,其水平和垂直方向的抗拉强度分别为1367.7、1360.3 MPa,伸长率为15.2%、14.4%,而CMT试样水平和垂直方向的抗拉强度分别为1149.1、1063.4 MPa,伸长率为20.1%、17.8%。相比于CMT构件力学性能表现出显著的各向异性,PAAM构件力学性能趋向于各向同性,这归因于PAAM极高的热输入使层间熔合更加充分,以及长时间的高温状态引发的回复和再结晶削弱了组织的择优取向,从而影响性能的各向异性。
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版权所有,未经授权,不得转载。, copyrightOwner=《科技导报》编辑部, extLink=null, articleAbsUrl=null, sourceXml=Ujo0QMzCGxpUpLp9HRjnew==, magXml=e22bkNT1TS4dEBmrT6cyRA==, pdfUrl=null, pdf=cXBiCyFRv+cbcnhVuaYZag==, pdfFileSize=12492407, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=D94ue1+0hEk3cGdhER4X5Q==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=GWzCivp+s/3ZIH4Kq4gVqg==, mapNumber=null, fund=null)}, authors=[Author(id=1254112866118865840, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1254112845810045797, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=15295780026@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1254112866345358266, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1254112845810045797, authorId=1254112866118865840, language=EN, stringName=Guan WANG, firstName=Guan, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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不同样品的IPF图、GND分布图和晶粒尺寸, figureFileSmall=zvHa7EONlEdq1YWx4ozPNQ==, figureFileBig=1XyPb4UsVvnDAZhK/oeQBw==, tableContent=null), ArticleFig(id=1254112877183438922, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1254112845810045797, language=EN, label=null, caption=null, figureFileSmall=vf7azJk/rTwun3DYFJB3tA==, figureFileBig=+c3aTUawaqgG7t3c9yaaFg==, tableContent=null), ArticleFig(id=1254112877258936395, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1254112845810045797, language=CN, label=图8, caption=
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不同样品的断口形貌(a)PAAM−H(b)PAAM−V(c)CMT−H(d)CMT−V
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| 材料 | C | Ni | Cr | Mo | Mn | Ti | Al | Si | S | P | Fe |
|---|
| 丝材 | 0.015 | 14.08 | 3.41 | 3.13 | 1.39 | 0.54 | 0.18 | 0.016 | 0.006 | 0.008 | 余量 |
| 基板 | 0.060 | 9.11 | 18.18 | — | 0.76 | — | — | 0.690 | 0.010 | — | 余量 |
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丝材和基板元素质量分数 (%)
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| 材料 | C | Ni | Cr | Mo | Mn | Ti | Al | Si | S | P | Fe |
|---|
| 丝材 | 0.015 | 14.08 | 3.41 | 3.13 | 1.39 | 0.54 | 0.18 | 0.016 | 0.006 | 0.008 | 余量 |
| 基板 | 0.060 | 9.11 | 18.18 | — | 0.76 | — | — | 0.690 | 0.010 | — | 余量 |
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| 工艺参数 | PAAM | CMT |
|---|
| 保护气 | 纯Ar | 纯Ar |
| 层间温度/℃ | 110±10 | 110±10 |
| 电流/A | 140 | 166 |
| 电压/V | 20.1 | 20.3 |
| 送丝速度/(m·min−1) | 1.6 | 6.0 |
| 行走速度/(mm·s−1) | 1.3 | 4.6 |
| 保护气流量/(L·min−1) | 18 | 18 |
| 离子气流量/(L·min−1) | 0.6 | — |
| 电弧焊接模式 | — | CMT+P |
| 层宽/mm | 12.1 | 12.1 |
| 层厚/mm | 1.5 | 1.5 |
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增材成形工艺主要参数
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| 工艺参数 | PAAM | CMT |
|---|
| 保护气 | 纯Ar | 纯Ar |
| 层间温度/℃ | 110±10 | 110±10 |
| 电流/A | 140 | 166 |
| 电压/V | 20.1 | 20.3 |
| 送丝速度/(m·min−1) | 1.6 | 6.0 |
| 行走速度/(mm·s−1) | 1.3 | 4.6 |
| 保护气流量/(L·min−1) | 18 | 18 |
| 离子气流量/(L·min−1) | 0.6 | — |
| 电弧焊接模式 | — | CMT+P |
| 层宽/mm | 12.1 | 12.1 |
| 层厚/mm | 1.5 | 1.5 |
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