Article(id=1249065617832219115, tenantId=1146029695717560320, journalId=1249024468962553931, issueId=1249065613306569569, articleNumber=null, orderNo=null, doi=10.11868/j.issn.1005-5053.2025.000116, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1750953600000, receivedDateStr=2025-06-27, revisedDate=null, revisedDateStr=null, acceptedDate=1756742400000, acceptedDateStr=2025-09-02, onlineDate=1775730049808, onlineDateStr=2026-04-09, pubDate=1759248000000, pubDateStr=2025-10-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1775730049808, onlineIssueDateStr=2026-04-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1775730049808, creator=13041195026, updateTime=1775730049808, updator=13041195026, issue=Issue{id=1249065613306569569, tenantId=1146029695717560320, journalId=1249024468962553931, year='2025', volume='45', issue='5', pageStart='1', pageEnd='182', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1775730048728, creator=13041195026, updateTime=1775730148042, updator=13041195026, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1249066029947757306, tenantId=1146029695717560320, journalId=1249024468962553931, issueId=1249065613306569569, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1249066029951951611, tenantId=1146029695717560320, journalId=1249024468962553931, issueId=1249065613306569569, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=142, endPage=149, ext={EN=ArticleExt(id=1249065618050322936, articleId=1249065617832219115, tenantId=1146029695717560320, journalId=1249024468962553931, language=EN, title=Effects of P on microstructures and properties of directionally solidified superalloy DZ125, columnId=1249065616670396851, journalTitle=Journal of Aeronautical Materials, columnName=Research Paper, runingTitle=null, highlight=null, articleAbstract=
The directionally solidified superalloy DZ125 is widely used as turbine blades in aero-engines. This work investigates the influence of phosphorus(P)on the microstructure, mechanical properties and crack susceptibility of DZ125 alloy. The results indicate that P primarily segregates at grain boundaries in DZ125 alloy and has little effect on γ′ phases, γ+γ′ eutectic and carbides in the alloy. When P content reaches 0.008% (mass fraction, the same below) P-rich phases form in the interdendritic regions during casting, which subsequently dissolve back into the matrix during heat treatment.When the P content is no more than 0.0039%, P shows no obvious effects on the room-temperature tensile properties or the stress rupture life at 980℃/235 MPa. However, it has a significant impact on the stress rupture life at 760℃/805 MPa: the alloy with 0.0039% P exhibits a 37% decrease in stress rupture life at 760℃/805 MPa compared to the alloy with 0.0013% P, due to the segregation of P at grain boundaries weakens the grain boundaries. When the P content reaches 0.011%, the intergranular cracks appear in the DZ125 alloy hollow turbine blades during directionally solidified process. The main reason for the increase of crack susceptibility is excessive enrichment of P at grain boundaries and precipitation of P-rich phases nearby grain boundaries, which leads to grain boundary weakening and crack initiation.
, correspAuthors=Chengbo XIAO, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2025 Journal of Aeronautical Materials. All rights reserved., 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, authorCompany=null, fund=null, authors=null, authorsList=Jinxia SONG, Chihang JIANG, Yongwang KANG, Chengbo XIAO, Liwu JIANG, Ming LI, Shenglong DAI), CN=ArticleExt(id=1249065621791642258, articleId=1249065617832219115, tenantId=1146029695717560320, journalId=1249024468962553931, language=CN, title=P对定向凝固高温合金DZ125组织和性能的影响, columnId=1249065616850751931, journalTitle=航空材料学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
定向凝固高温合金DZ125在航空发动机上广泛用作涡轮叶片,本工作研究微量元素P对DZ125合金微观组织、力学性能和裂纹倾向性的影响。结果表明:P元素在DZ125合金中主要偏聚在晶界处,对合金中γ′、γ+γ′共晶、碳化物等影响很小。当P含量达到0.008%(质量分数,下同)时,铸态合金在枝晶间形成了富P相,热处理后富P相回溶消失;当P含量不超过0.0039%时,P对DZ125合金的室温拉伸性能及980 ℃/235MPa 持久寿命没有明显影响,但对760 ℃/805 MPa持久寿命有明显影响,P含量为0.0039%的合金760 ℃/805MPa持久寿命相较于P含量为0.0013%的合金下降了37%,这是由于较高含量的P元素在晶界偏聚导致晶界弱化所致。当P含量达到0.011%时,DZ125合金空心涡轮叶片在定向凝固过程中出现了明显的沿晶裂纹。DZ125合金裂纹倾向性增加的主要原因是过量的P在晶界富集,并析出富P相,导致晶界弱化和裂纹萌生。
, correspAuthors=肖程波, authorNote=null, correspAuthorsNote=
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As cast microstructures of DZ125 alloy with various P contents (a)dendrite;(b)carbides;(c)carbides and borides;(d)γ+γ′ eutectic;(1)9P alloy;(2)39P alloy, figureFileSmall=OwcGZHP4q47zDtZE756t7A==, figureFileBig=oC+DzV7F6aKZSdJbpVa+4w==, tableContent=null), ArticleFig(id=1249065626778669933, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=CN, label=图1, caption=
不同P含量DZ125合金的铸态组织 (a)枝晶形貌;(b)碳化物;(c)碳化物和硼化物;(d)γ+γ′共晶组织;(1)9P合金;(2)39P合金, figureFileSmall=OwcGZHP4q47zDtZE756t7A==, figureFileBig=oC+DzV7F6aKZSdJbpVa+4w==, tableContent=null), ArticleFig(id=1249065626992579444, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=EN, label=Fig.2, caption=
P-rich phases in as cast 80P alloy (a)symbiosis with HfC;(b)besides γ+γ′ eutectic, figureFileSmall=U3Z7DxPuBesWGdsmREDDlg==, figureFileBig=9QTzfLNuXBc4HGJYw+oNHg==, tableContent=null), ArticleFig(id=1249065627063882617, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=CN, label=图2, caption=
80P合金铸态组织中的富P相 (a)和HfC共生;(b)在γ+γ′共晶边缘, figureFileSmall=U3Z7DxPuBesWGdsmREDDlg==, figureFileBig=9QTzfLNuXBc4HGJYw+oNHg==, tableContent=null), ArticleFig(id=1249065627122602877, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=EN, label=Fig.3, caption=
Microstructures of heat treated 39P alloy (a)overall morphology of carbides;(b)carbides in grain boundary;(c)γ and γ′ phase morphology in dendrite region, figureFileSmall=FQXE1/hokzLA2VCvuo9rZg==, figureFileBig=nIIwCMmpOYoqXhou+O/FOw==, tableContent=null), ArticleFig(id=1249065627210683265, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=CN, label=图3, caption=
39P合金热处理态组织 (a)碳化物整体形貌;(b)晶界处的碳化物;(c)枝晶干区域γ、γ′相形貌, figureFileSmall=FQXE1/hokzLA2VCvuo9rZg==, figureFileBig=nIIwCMmpOYoqXhou+O/FOw==, tableContent=null), ArticleFig(id=1249065627281986436, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=EN, label=Fig.4, caption=
3D-APT reconstruction and elemental distribution(a) and concentration profile of P element(b) at grain boundary of 39P alloy, figureFileSmall=WtFn4Wf1HRbn0HWndsa8Lw==, figureFileBig=76jhGYli3S6Olb4ZF92yiQ==, tableContent=null), ArticleFig(id=1249065627344900999, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=CN, label=图4, caption=
39P合金晶界区域的3D-APT重建、元素分布(a)和P元素的浓度分布(b), figureFileSmall=WtFn4Wf1HRbn0HWndsa8Lw==, figureFileBig=76jhGYli3S6Olb4ZF92yiQ==, tableContent=null), ArticleFig(id=1249065627445564298, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=EN, label=Fig.5, caption=
TEM EDS mapping analysis results of compositions at grain boundary of 110P alloy, figureFileSmall=yQBZpxbHzsT6cBO4QOxgUA==, figureFileBig=TwnF/KnMvX3QFLRdnN5p6g==, tableContent=null), ArticleFig(id=1249065627638502289, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=CN, label=图5, caption=
110P合金晶界成分透射电镜能谱面分布分析结果, figureFileSmall=yQBZpxbHzsT6cBO4QOxgUA==, figureFileBig=TwnF/KnMvX3QFLRdnN5p6g==, tableContent=null), ArticleFig(id=1249065627831440274, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=EN, label=Fig.6, caption=
Effect of P content on mechanical properties of DZ125 alloys(a)room temperature tensile property;(b)stress rupture property, figureFileSmall=DQZ/+P1sMwZKhOhSZAGn4A==, figureFileBig=IixEJxLAgLnKnSUFyegahQ==, tableContent=null), ArticleFig(id=1249065627957269400, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=CN, label=图6, caption=
P含量对DZ125合金力学性能的影响 (a)室温拉伸性能;(b)持久性能, figureFileSmall=DQZ/+P1sMwZKhOhSZAGn4A==, figureFileBig=IixEJxLAgLnKnSUFyegahQ==, tableContent=null), ArticleFig(id=1249065628095681437, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=EN, label=Fig.7, caption=
Persistent tensile fracture morphology of DZ125 alloy with various contents of P after stress ruptured under 760 ℃/805 MPa(a)macro morphology of fracture;(b)microstructure of fracture;(1)9P alloy;(2)39P alloy, figureFileSmall=s46c67GpRuOGEhcoit2GeA==, figureFileBig=EfPdDgynARdmnGUFxY1BXA==, tableContent=null), ArticleFig(id=1249065628175373217, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=CN, label=图7, caption=
不同P含量DZ125合金760 ℃/805 MPa持久拉伸断口形貌 (a)断口宏观形貌;(b)断口微观形貌;(1)9P合金;(2)39P合金, figureFileSmall=s46c67GpRuOGEhcoit2GeA==, figureFileBig=EfPdDgynARdmnGUFxY1BXA==, tableContent=null), ArticleFig(id=1249065629748237222, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=EN, label=Fig.8, caption=
Secondary cracks in DZ125 alloy with various contents of P after prolonged tensile fracture under 760 ℃/805 MPa (a)9P alloy;(b)13P alloy;(c)39P alloy, figureFileSmall=PkywkkvN+uwqfOuvzryjtQ==, figureFileBig=qZ7uQVlnHQMflKo7gDjOsw==, tableContent=null), ArticleFig(id=1249065629886649259, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=CN, label=图8, caption=
不同P含量DZ125合金760 ℃/805 MPa持久拉伸断裂后的二次裂纹 (a)9P合金;(b)13P合金;(c)39P合金, figureFileSmall=PkywkkvN+uwqfOuvzryjtQ==, figureFileBig=qZ7uQVlnHQMflKo7gDjOsw==, tableContent=null), ArticleFig(id=1249065630004089777, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=EN, label=Fig.9, caption=
Intergranular cracks in 110P alloy turbine blades (a)macroscopic morphology;(b)fluorescence detection results;(c)P-rich phase nearby the crack and its EDS mapping result of P, figureFileSmall=jqnDN823TMn9dD97BYHl1g==, figureFileBig=g/RftEkY7eqATao1oZSeLA==, tableContent=null), ArticleFig(id=1249065630104753076, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=CN, label=图9, caption=
110P合金涡轮叶片裂纹情况 (a)宏观形貌;(b)荧光检测结果;(c)裂纹附近的富P相及其P元素面分布图, figureFileSmall=jqnDN823TMn9dD97BYHl1g==, figureFileBig=g/RftEkY7eqATao1oZSeLA==, tableContent=null), ArticleFig(id=1249065630197027767, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=EN, label=Tab.1, caption=
Compositions of precipitated phases in as cast DZ125 alloy with various P contents(mass fraction/%)
, figureFileSmall=null, figureFileBig=null, tableContent=
| Alloy | Phase | C | B | P | Al | Ti | Cr | Co | Ni | Mo | Hf | Ta | W |
| 9P | TaC | 7.23 | — | — | — | 8.45 | 1.09 | 1.1 | 5.1 | 2.65 | 11.32 | 55.59 | 7.47 |
| 9P | HfC | 7.19 | — | — | — | 2.22 | 0.69 | 1.08 | 4.59 | — | 55.35 | 23.52 | 5.37 |
| 9P | M3B2 | — | 8.18 | — | — | 0.44 | 20.57 | 2.87 | 6.45 | 25.83 | — | 2.18 | 33.48 |
| 39P | TaC | 7.24 | — | — | — | 8.15 | 1.32 | 1.12 | 5.53 | 2.92 | 11.41 | 53.59 | 8.71 |
| 39P | HfC | 7.00 | — | — | — | 2.00 | 0.55 | 0.85 | 4.96 | — | 52.60 | 27.52 | 4.51 |
| 39P | M3B2 | — | 8.02 | — | — | 0.49 | 19.23 | 2.97 | 5.95 | 22.27 | — | 2.81 | 38.26 |
| 80P | Phase rich in P | 3.00 | — | 7.25 | 0.12 | 0.64 | 1.63 | 6.45 | 32.85 | — | 45.34 | 1.64 | 1.08 |
| | 2.98 | — | 8.94 | 0.18 | 1.10 | 1.77 | 8.09 | 34.78 | 0.45 | 38.32 | 2.40 | 0.7 |
), ArticleFig(id=1249065630276719549, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=CN, label=表1, caption=
不同P含量铸态DZ125合金中析出相的成分(质量分数/%)
, figureFileSmall=null, figureFileBig=null, tableContent=
| Alloy | Phase | C | B | P | Al | Ti | Cr | Co | Ni | Mo | Hf | Ta | W |
| 9P | TaC | 7.23 | — | — | — | 8.45 | 1.09 | 1.1 | 5.1 | 2.65 | 11.32 | 55.59 | 7.47 |
| 9P | HfC | 7.19 | — | — | — | 2.22 | 0.69 | 1.08 | 4.59 | — | 55.35 | 23.52 | 5.37 |
| 9P | M3B2 | — | 8.18 | — | — | 0.44 | 20.57 | 2.87 | 6.45 | 25.83 | — | 2.18 | 33.48 |
| 39P | TaC | 7.24 | — | — | — | 8.15 | 1.32 | 1.12 | 5.53 | 2.92 | 11.41 | 53.59 | 8.71 |
| 39P | HfC | 7.00 | — | — | — | 2.00 | 0.55 | 0.85 | 4.96 | — | 52.60 | 27.52 | 4.51 |
| 39P | M3B2 | — | 8.02 | — | — | 0.49 | 19.23 | 2.97 | 5.95 | 22.27 | — | 2.81 | 38.26 |
| 80P | Phase rich in P | 3.00 | — | 7.25 | 0.12 | 0.64 | 1.63 | 6.45 | 32.85 | — | 45.34 | 1.64 | 1.08 |
| | 2.98 | — | 8.94 | 0.18 | 1.10 | 1.77 | 8.09 | 34.78 | 0.45 | 38.32 | 2.40 | 0.7 |
), ArticleFig(id=1249065630356411327, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=EN, label=Tab.2, caption=
Average sizes of γ′ phases in dendrite region of heat treated DZ125 alloy with various contents of P
, figureFileSmall=null, figureFileBig=null, tableContent=
| Alloy | Average size/nm |
| 9P | 344.11±69.73 |
| 13P | 334.61±79.04 |
| 19P | 337.45±59.37 |
| 39P | 348.73±63.27 |
), ArticleFig(id=1249065630507406275, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=CN, label=表2, caption=
不同P含量DZ125合金热处理态枝晶干区域γ′相的平均尺寸
, figureFileSmall=null, figureFileBig=null, tableContent=
| Alloy | Average size/nm |
| 9P | 344.11±69.73 |
| 13P | 334.61±79.04 |
| 19P | 337.45±59.37 |
| 39P | 348.73±63.27 |
), ArticleFig(id=1249065630591292359, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=EN, label=Tab.3, caption=
Effect of P on the cracking tendency of DZ125 alloy hollow turbine blade
, figureFileSmall=null, figureFileBig=null, tableContent=
| Alloy | P/10−6 | Number of blades casted | Number of blades with cracks | Number of cracks in each blade | Length of each crack/mm |
| 9P | 9 | 12 | 0 | 0 | 0 |
| 80P | 80 | 12 | 0 | 0 | 0 |
| 110P | 110 | 12 | 4 | 2-3 | 3-6 |
), ArticleFig(id=1249065630687761355, tenantId=1146029695717560320, journalId=1249024468962553931, articleId=1249065617832219115, language=CN, label=表3, caption=
P元素对DZ125合金空心涡轮叶片裂纹倾向性的影响
, figureFileSmall=null, figureFileBig=null, tableContent=
| Alloy | P/10−6 | Number of blades casted | Number of blades with cracks | Number of cracks in each blade | Length of each crack/mm |
| 9P | 9 | 12 | 0 | 0 | 0 |
| 80P | 80 | 12 | 0 | 0 | 0 |
| 110P | 110 | 12 | 4 | 2-3 | 3-6 |
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