Article(id=1321927816422207741, tenantId=1146029695717560320, journalId=1220038251117760515, issueId=1321927171292123557, articleNumber=null, orderNo=null, doi=10.11868/j.issn.1001-4381.2025.000087, pmid=null, cstr=32421.14.j.issn.1001-4381.2025.000087, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1739808000000, receivedDateStr=2025-02-18, revisedDate=null, revisedDateStr=null, acceptedDate=1744905600000, acceptedDateStr=2025-04-18, onlineDate=1793101751665, onlineDateStr=2026-10-27, pubDate=1773936000000, pubDateStr=2026-03-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793101751665, onlineIssueDateStr=2026-10-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793101751665, creator=13701087609, updateTime=1793101751665, updator=13701087609, issue=Issue{id=1321927171292123557, tenantId=1146029695717560320, journalId=1220038251117760515, year='2026', volume='54', issue='3', pageStart='1', pageEnd='272', issueExtLink='null', onlineDate='null', pubDate='1773936000000', pubDateStr='2026-03-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793101597855, creator='13701087609', updateTime=1793101597855, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=122, endPage=130, ext={EN=ArticleExt(id=1321927816627728638, articleId=1321927816422207741, tenantId=1146029695717560320, journalId=1220038251117760515, language=EN, title=Effect of two post-weld heat treatment on microstructure and mechanical properties of Incoloy 825 nickel base alloy argon arc welded joint, columnId=1220689384450478826, journalTitle=Journal of Materials Engineering, columnName=RESEARCH ARTICLE, runingTitle=null, highlight=null, articleAbstract=
To tackle the issue of microstructural segregation in nickel-based alloy weldments and the consequent degradation of joint mechanical properties, this study delves into the impacts of two post-weld heat treatment schedules on the microstructural features and mechanical behavior of gas tungsten arc-welded Incoloy 825 nickel-based alloy joints.The results reveal that both heat treatment procedures lead to a notable coarsening of fine grain boundary carbides in the base metal (BM). Moreover, the γ′ phase can be precipitated within BM grains through solution treatment combined with two-stage aging. Both post-weld heat treatments facilitate extensive precipitation of the δ and Laves phases in the WZ interdendritic zones, effectively alleviating segregation. Nevertheless, joints subjected to solution treatment and two-stage aging develop microcracks at the interface between the unmixed zone (UMZ) and the heat-affected zone (HAZ), along with the formation of micropores within the HAZ. Mechanical characterization indicates a substantial increase in microhardness in the weld zone (WZ) after both heat treatment protocols. Solution treatment with single-stage aging maintains hardness levels in the HAZ and BM that are comparable to those in the as-welded state. Joints treated with solution treatment and single-stage aging show a marginal reduction in tensile strength, accompanied by a 9.2% improvement in uniform elongation, and fracture exclusively occurs within the BM. Conversely, the tensile strength of joints treated with solution treatment and two-stage aging significantly rises to 795 MPa, an increase of 17.3%, while the uniform elongation decreases. The fracture localization shifts to the UMZ/HAZ interfacial regions and adjacent HAZ areas, presenting a ductile-brittle mixed fracture morphology.
, authors=Jufeng HUANG
1, Naixin LYU
1, Xiuqing XU
1, Yubin CUI
1, 2, Hongduo WANG
2, authorsList=Jufeng HUANG, Naixin LYU, Xiuqing XU, Yubin CUI, Hongduo WANG, authorCompany=null, correspAuthors=Jufeng HUANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, 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=1321927819786039565, articleId=1321927816422207741, tenantId=1146029695717560320, journalId=1220038251117760515, language=CN, title=两种焊后热处理工艺对Incoloy 825镍基合金氩弧焊接头微观组织与力学性能的影响, columnId=1220689384622445292, journalTitle=材料工程, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
针对镍基合金在焊接后焊缝中产生微观组织偏析,导致接头力学性能下降等问题。对比研究了两种焊后热处理工艺对Incoloy 825镍基合金氩弧焊接头微观组织与力学性能的影响。组织分析表明:经两种工艺热处理后,母材(base material,BM)中原细小的晶界碳化物明显粗化,焊缝区(weld zone,WZ)枝晶间析出大量δ和Laves相。固溶+双级时效热处理可诱导BM晶内析出γ′相,且导致未混合区(unmixed zone,UMZ)与热影响区(heat-affected zone,HAZ)界面产生微裂纹,HAZ形成微孔洞。力学性能测试分析表明:经两种工艺热处理后,WZ显微硬度明显增加。其中,固溶+双级时效热处理HAZ和BM硬度达到接头最高值。经固溶+单级时效热处理接头抗拉强度略有下降,而均匀伸长率提高了9.2%,拉伸断裂位于BM区。经固溶+双级时效热处理接头抗拉强度显著提高,达795 MPa,提高了17.3%,而均匀伸长率有所下降,拉伸断裂位于UMZ/HAZ界面及部分HAZ,拉伸断口呈韧脆混合断裂特征。
, authors=黄居峰
1, 吕乃欣
1, 徐秀清
1, 崔宇斌
1, 2, 王洪铎
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1.State Key Laboratory of Oil and Gas Equipment,CNPC Tubular Goods Research Institute,Xi’an 710077,China
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Micromorphology of samples, figureFileSmall=sueCM0n7VnfolX7QqBaPhQ==, figureFileBig=CUB5HrwOtdoG3vo305FKww==, tableContent=null), ArticleFig(id=1321928131020178428, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=CN, label=图1, caption=
样品的微观形貌, figureFileSmall=sueCM0n7VnfolX7QqBaPhQ==, figureFileBig=CUB5HrwOtdoG3vo305FKww==, tableContent=null), ArticleFig(id=1321928131263448061, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=EN, label=Fig.2, caption=
SEM microstructure before and after BM heat treatment(a)before BM heat treatment;(b)EDS point scan results before BM heat treatment;(c)solution treatment with single-stage aging heat treatment;(d)solution treatment with two-stage aging heat treatment, figureFileSmall=jgoOopy5eMXS1gP6FmBp6Q==, figureFileBig=P815wSmgLNbwlbBCBDQ5Aw==, tableContent=null), ArticleFig(id=1321928131385082878, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=CN, label=图2, caption=
BM热处理前后SEM微观组织(a)BM热处理前;(b)BM热处理前EDS点扫结果;(c)固溶+单级时效热处理;(d)固溶+双级时效热处理, figureFileSmall=jgoOopy5eMXS1gP6FmBp6Q==, figureFileBig=P815wSmgLNbwlbBCBDQ5Aw==, tableContent=null), ArticleFig(id=1321928131452191743, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=EN, label=Fig.3, caption=
Microstructure of WZ before and after heat treatment(a)before WZ heat treatment;(b)EDS scanning results before WZ heat treatment;(c)solution treatment with single-stage aging heat treatment;(d)solution treatment with two-stage aging heat treatment;(e)EDS surface scan results of solution treatment with single-stage aging WZ amplification area;(f)XRD pattern of WZ before and after heat treatment, figureFileSmall=QcSoQRbK/a/JK9bFdvK9XA==, figureFileBig=jBf0o/aEiilWNvwD3oRNxA==, tableContent=null), ArticleFig(id=1321928131519300608, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=CN, label=图3, caption=
热处理前后WZ微观组织(a)WZ热处理前;(b)WZ热处理前EDS面扫结果;(c)固溶+单级时效热处理;(d)固溶+双级时效热处理;(e)固溶+单级时效热处理WZ放大区域EDS面扫结果;(f)热处理前后WZ XRD图谱, figureFileSmall=QcSoQRbK/a/JK9bFdvK9XA==, figureFileBig=jBf0o/aEiilWNvwD3oRNxA==, tableContent=null), ArticleFig(id=1321928131586408448, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=EN, label=Fig.4, caption=
UMZ and UMZ/HAZ interface structures before and after heat treatment(a)before heat treatment;(b)EDS point scan results before heat treatment;(c)solution treatment with single-stage aging heat treatment;(d)solution treatment with two-stage aging heat treatment
, figureFileSmall=zPcMK9Wf7yC/CCROo9UZSA==, figureFileBig=9LDFWLhMo70qzwGcxoi6Tg==, tableContent=null), ArticleFig(id=1321928131649323009, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=CN, label=图4, caption=
热处理前后UMZ及UMZ/HAZ界面组织(a)热处理前;(b)热处理前EDS点扫结果;(c)固溶+单级时效热处理;(d)固溶+双级时效热处理
, figureFileSmall=zPcMK9Wf7yC/CCROo9UZSA==, figureFileBig=9LDFWLhMo70qzwGcxoi6Tg==, tableContent=null), ArticleFig(id=1321928131716431874, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=EN, label=Fig.5, caption=
HAZ microstructure before and after heat treatment(a)before HAZ heat treatment;(b)solution treatment with single-stage aging heat treatment;(c)EDS surface scan results of, figureFileSmall=6XSqDUmdsq8A1Owqbbp55A==, figureFileBig=P+J0cdQpvlh/+7ACOO7wiQ==, tableContent=null), ArticleFig(id=1321928131779346435, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=CN, label=图5, caption=
热处理前后HAZ微观组织(a)HAZ热处理前;(b)固溶+单级时效热处理;(c)固溶+单级时效热处理EDS面扫结果;(d)固溶+双级时效热处理solution treatment with single-stage aging heat treatment;(d)solution treatment with two-stage aging heat treatment
, figureFileSmall=6XSqDUmdsq8A1Owqbbp55A==, figureFileBig=P+J0cdQpvlh/+7ACOO7wiQ==, tableContent=null), ArticleFig(id=1321928131854843908, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=EN, label=Fig.6, caption=
Microhardness of welded joint before and after heat treatment, figureFileSmall=+JSr2SVncncixym12bClQA==, figureFileBig=v0FAD/MnmEEuLFV+wwyKwg==, tableContent=null), ArticleFig(id=1321928131926147077, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=CN, label=图6, caption=
热处理前后焊接接头显微硬度, figureFileSmall=+JSr2SVncncixym12bClQA==, figureFileBig=v0FAD/MnmEEuLFV+wwyKwg==, tableContent=null), ArticleFig(id=1321928131989061638, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=EN, label=Fig.7, caption=
Tensile properties of BM and welded joints before and after heat treatment(a)stress-strain curves;(b)fracture macro morphology of solution treatment with two-stage aging joints;
(c)magnification of UMZ in Fig.(b);(d)HAZ enlargement and fracture morphology in Fig.(b)
, figureFileSmall=X5SuG2azQ0efyW7GHFqCdQ==, figureFileBig=7T7SWHJXBoH/ATnEttuPEw==, tableContent=null), ArticleFig(id=1321928132060364807, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=CN, label=图7, caption=
BM及热处理前后焊接接头拉伸性能(a)应力-应变曲线;(b)固溶+双级时效热处理接头断裂宏观形貌;(c)图b中UMZ放大图;(d)图b中HAZ放大图及断口形貌
, figureFileSmall=X5SuG2azQ0efyW7GHFqCdQ==, figureFileBig=7T7SWHJXBoH/ATnEttuPEw==, tableContent=null), ArticleFig(id=1321928132123279368, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=EN, label=Table 1, caption=
Chemical compositions of base material and welding material (mass fraction/%)
, figureFileSmall=null, figureFileBig=null, tableContent=
| Material | C | Cr | Ni | Si | Mn | Ti | P | S | Nb | Mo | Cu | Fe |
|---|
| Base material | 0.011 | 22.4 | 39.1 | 0.11 | 0.50 | 0.95 | 0.016 | 0.001 | — | 3.0 | 2.0 | Bal. |
| Welding material | 0.02 | 22.0 | 64.0 | 0.14 | 0.20 | — | — | — | 3.5 | 9.0 | — | 1.0 |
), ArticleFig(id=1321928132194582537, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=CN, label=表1, caption=
母材及焊材化学成分(质量分数/%)
, figureFileSmall=null, figureFileBig=null, tableContent=
| Material | C | Cr | Ni | Si | Mn | Ti | P | S | Nb | Mo | Cu | Fe |
|---|
| Base material | 0.011 | 22.4 | 39.1 | 0.11 | 0.50 | 0.95 | 0.016 | 0.001 | — | 3.0 | 2.0 | Bal. |
| Welding material | 0.02 | 22.0 | 64.0 | 0.14 | 0.20 | — | — | — | 3.5 | 9.0 | — | 1.0 |
), ArticleFig(id=1321928132278468618, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=EN, label=Table 2, caption=
Welding process parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| Welding layer | Welding current/A | Welding speed/(mm·min-1) | Types and polarity of current | Front-side shielding Ar gas flow/(L·min-1) | Back-side purging Ar gas flow/(L·min-1) |
|---|
| Root pass | 75-85 | 35-40 | Straight polarity direct current | 10-15 | 5-6 |
| Filler pass | 90-95 | 45-50 | Straight polarity direct current | 10-15 | — |
| Cover pass | 90-95 | 45-50 | Straight polarity direct current | 10-15 | — |
), ArticleFig(id=1321928132353966091, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=CN, label=表2, caption=
焊接工艺参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| Welding layer | Welding current/A | Welding speed/(mm·min-1) | Types and polarity of current | Front-side shielding Ar gas flow/(L·min-1) | Back-side purging Ar gas flow/(L·min-1) |
|---|
| Root pass | 75-85 | 35-40 | Straight polarity direct current | 10-15 | 5-6 |
| Filler pass | 90-95 | 45-50 | Straight polarity direct current | 10-15 | — |
| Cover pass | 90-95 | 45-50 | Straight polarity direct current | 10-15 | — |
), ArticleFig(id=1321928132416880652, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=EN, label=Table 3, caption=
Test results and standard values of tensile properties of base metal and joints before and after heat treatment
, figureFileSmall=null, figureFileBig=null, tableContent=
| Type | Tensile strength/MPa | Percentage uniform elongation/% | Standard values of tensile strength/MPa |
|---|
| Base material | 672±5 | 43.0±0.17 | 665 |
| Pre-heat treatment joint | 698±10 | 38.0±0.8 | 585 |
| Solution treatment with single-stage aging joint | 686±8 | 41.5±0.5 | 585 |
| Solution treatment with two-stage aging joint | 795±12 | 37.0±1.2 | 585 |
), ArticleFig(id=1321928132496572429, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321927816422207741, language=CN, label=表3, caption=
母材及热处理前后接头拉伸性能测试结果及标准值
, figureFileSmall=null, figureFileBig=null, tableContent=
| Type | Tensile strength/MPa | Percentage uniform elongation/% | Standard values of tensile strength/MPa |
|---|
| Base material | 672±5 | 43.0±0.17 | 665 |
| Pre-heat treatment joint | 698±10 | 38.0±0.8 | 585 |
| Solution treatment with single-stage aging joint | 686±8 | 41.5±0.5 | 585 |
| Solution treatment with two-stage aging joint | 795±12 | 37.0±1.2 | 585 |
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