{"title":"用 Ti-Mn-Fe-Ni-Zr 系中熵填充合金钎焊的 TiAl 接头的微观结构和力学性能","authors":"Zhiliang Zhai, Xinyu Ren, Yonglai Shang, Yaoyong Cheng, Haishui Ren, Huaping Xiong, Yongjuan Jing","doi":"10.1007/s40194-024-01785-7","DOIUrl":null,"url":null,"abstract":"<div><p>A five-element medium-entropy filler alloy with composition of Ti-(18 ~ 24)Mn-(12 ~ 18)Fe-(3 ~ 8)Ni-(3 ~ 8)Zr (wt.%) was proposed for vacuum brazing of TiAl-based alloy. The filler alloy was mainly composed of Ti-based solid solution and Ti-(Fe, Mn) compound dissolved with elements of Ni and Zr. The filler alloy ingot was ground into powder and then the filler powder was preset into the V-shaped groove butt joint with a gap of 50 μm. The Ti-Mn-Fe-Ni-Zr brazing alloy showed the liquidus temperature of 1060.1 °C, and also presented excellent wettability on TiAl substrate at 1110 °C for 10 min. The brazed joint mainly consisted of γ-TiAl, α<sub>2</sub>-Ti<sub>3</sub>Al, and residual brazing filler reaction phase. The brazing condition of 1210 °C/45 min exhibited the maximum joint thickness of 308 μm and the maximum area percentage of γ-TiAl phase of 33.77%, with almost elimination of residual brazing filler reaction phase within the joint, and meanwhile offered the maximum room-temperature tensile strength of 418 MPa, 70.85% of the base alloy. The joint fracture showed a mixed mode of intergranular and transgranular fracture.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":null,"pages":null},"PeriodicalIF":2.4000,"publicationDate":"2024-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Microstructures and mechanical properties of TiAl joint brazed with Ti-Mn-Fe-Ni-Zr system medium-entropy filler alloy\",\"authors\":\"Zhiliang Zhai, Xinyu Ren, Yonglai Shang, Yaoyong Cheng, Haishui Ren, Huaping Xiong, Yongjuan Jing\",\"doi\":\"10.1007/s40194-024-01785-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A five-element medium-entropy filler alloy with composition of Ti-(18 ~ 24)Mn-(12 ~ 18)Fe-(3 ~ 8)Ni-(3 ~ 8)Zr (wt.%) was proposed for vacuum brazing of TiAl-based alloy. The filler alloy was mainly composed of Ti-based solid solution and Ti-(Fe, Mn) compound dissolved with elements of Ni and Zr. The filler alloy ingot was ground into powder and then the filler powder was preset into the V-shaped groove butt joint with a gap of 50 μm. The Ti-Mn-Fe-Ni-Zr brazing alloy showed the liquidus temperature of 1060.1 °C, and also presented excellent wettability on TiAl substrate at 1110 °C for 10 min. The brazed joint mainly consisted of γ-TiAl, α<sub>2</sub>-Ti<sub>3</sub>Al, and residual brazing filler reaction phase. The brazing condition of 1210 °C/45 min exhibited the maximum joint thickness of 308 μm and the maximum area percentage of γ-TiAl phase of 33.77%, with almost elimination of residual brazing filler reaction phase within the joint, and meanwhile offered the maximum room-temperature tensile strength of 418 MPa, 70.85% of the base alloy. The joint fracture showed a mixed mode of intergranular and transgranular fracture.</p></div>\",\"PeriodicalId\":809,\"journal\":{\"name\":\"Welding in the World\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.4000,\"publicationDate\":\"2024-05-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Welding in the World\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s40194-024-01785-7\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"METALLURGY & METALLURGICAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Welding in the World","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s40194-024-01785-7","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
摘要
提出了一种用于 TiAl 基合金真空钎焊的五元素中熵填充合金，其成分为 Ti-(18 ~ 24)Mn-(12 ~ 18)Fe-(3 ~ 8)Ni-(3 ~ 8)Zr (重量百分比)。填充合金主要由 Ti 基固溶体和溶解有 Ni 和 Zr 元素的 Ti-（Fe、Mn）化合物组成。将填料合金铸锭研磨成粉末，然后将填料粉末预置到间隙为 50 μm 的 V 形凹槽对接接头中。钛-锰-铁-镍-锆钎焊合金的液相温度为 1060.1 °C，在 1110 °C、10 分钟的温度条件下，在钛铝基底上呈现出极佳的润湿性。钎焊接头主要由 γ-TiAl、α2-Ti3Al 和残余钎料反应相组成。在 1210 °C/45 min 的钎焊条件下，接头的最大厚度为 308 μm，γ-TiAl 相的最大面积百分比为 33.77%，接头内残余的钎焊填料反应相几乎消失，同时室温抗拉强度最大为 418 MPa，是基合金的 70.85%。接头断裂表现出晶间断裂和跨晶断裂的混合模式。
Microstructures and mechanical properties of TiAl joint brazed with Ti-Mn-Fe-Ni-Zr system medium-entropy filler alloy
A five-element medium-entropy filler alloy with composition of Ti-(18 ~ 24)Mn-(12 ~ 18)Fe-(3 ~ 8)Ni-(3 ~ 8)Zr (wt.%) was proposed for vacuum brazing of TiAl-based alloy. The filler alloy was mainly composed of Ti-based solid solution and Ti-(Fe, Mn) compound dissolved with elements of Ni and Zr. The filler alloy ingot was ground into powder and then the filler powder was preset into the V-shaped groove butt joint with a gap of 50 μm. The Ti-Mn-Fe-Ni-Zr brazing alloy showed the liquidus temperature of 1060.1 °C, and also presented excellent wettability on TiAl substrate at 1110 °C for 10 min. The brazed joint mainly consisted of γ-TiAl, α2-Ti3Al, and residual brazing filler reaction phase. The brazing condition of 1210 °C/45 min exhibited the maximum joint thickness of 308 μm and the maximum area percentage of γ-TiAl phase of 33.77%, with almost elimination of residual brazing filler reaction phase within the joint, and meanwhile offered the maximum room-temperature tensile strength of 418 MPa, 70.85% of the base alloy. The joint fracture showed a mixed mode of intergranular and transgranular fracture.
期刊介绍：
The journal Welding in the World publishes authoritative papers on every aspect of materials joining, including welding, brazing, soldering, cutting, thermal spraying and allied joining and fabrication techniques.
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