金属学报  1997, Vol. 33 Issue (9): 995-1001

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GH150合金焊接热影响区液化与液化裂纹

应慧筠;施成根;郝传勇;于尔靖;秦旭东;张琪

中国科学院金属研究所;沈阳;110015;中国科学院金属研究所;沈阳;110015;中国科学院金属研究所;沈阳;110015;中国科学院金属研究所;沈阳;110015;国营黎明机械公司;沈阳;110043;国营黎明机械公司;沈阳;110043

HEAT-AFFECTED ZONE LIQUATION AND LIQUATION CRACKING IN GH150 ALLOY WELDMENTS

YING Huiyun;SHI Chengen;HAO Chuanyong;YU Erjing (Institute of Metal Research;Chinese Academy of Sciences; Shenyang 110015); QIN Xudong;ZHANG Qi (National Liming Machine Corporation; Shenyang 110043)

应慧筠;施成根;郝传勇;于尔靖;秦旭东;张琪. GH150合金焊接热影响区液化与液化裂纹[J]. 金属学报, 1997, 33(9): 995-1001.
, , , , , . HEAT-AFFECTED ZONE LIQUATION AND LIQUATION CRACKING IN GH150 ALLOY WELDMENTS[J]. Acta Metall Sin, 1997, 33(9): 995-1001.

摘要 参考文献 相关文章 Metrics 全文: PDF(1361 KB)   摘要: 采用可变拘束试验、热塑性试验、差热分析、光镜与扫描电镜观察，研究了GH150合金焊接热影响区液化及液化裂纹形成机制加热过程中温度高于1250℃的热影响区由于γ／（Nb，Ti）C共晶产生液化，在温度达到1353℃（固相约至1375℃（液相线）的近维区，晶内出现大量液化点冷却过程中温度在1273和1200℃时形成γ／（Nb，Ti）C共晶和γ／Laves相共晶．（Nb，Ti）C组分液化及形成γ／Laves相共晶是GH150合金液化裂纹形成的主要冶金因素． 关键词 ： 组分液化,  液化裂纹,  γ／（Nb，Ti）C共晶,  γ／Laves相共晶     Abstract：Mechanisms of heat affected zone (HAZ) liquation and liquation cracking in GH150 alloy were investigated by using varestraint test and hot ductility test in conjunction with the differential thermal analysis (DTA) and optical, scanning electron microsopy. On heating, γ/ (Nb,Ti)C liquation take places in the HAZ above 1250℃. When the temperature reaches 1353- 1375℃, a large amount of liquid particles due to initial melting can be observed within the grains near the fusion boundary. On cooling, γ/(Nb,Ti)C eutectic and γ/ Laves phase eutectic take place at 1273 and 1200℃ respectively. The constitutional liquation of (Nb, Ti)C particles on heating and γ/ Laves phase eutectic reaction on cooling are the main metallurgical factors responsible for the HAZ liquation cracking in GH 150 alloy. Key words： constitutional liquation    liquaion cracking    γ/ (Nb    Ti)C eutectic    γ/ Laves phase eutectic. 收稿日期: 1997-09-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 应慧筠 施成根 郝传勇 于尔靖 秦旭东 张琪 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1997/V33/I9/995 1Knorovsky G A Cieslak M J,Headley T J,Roming A D,Hamm W F Jr.Metall Trans,1989;20A:2149 2Pepe J J ,Savage W F Weld J,1967;46:411 3Thompsom K G,Genculu S.Weld J,1983;62:337 [1] 陈树君, 王宣, 袁涛, 李晓旭. 镁合金焊缝液化裂纹敏感性及预测方法探究[J]. 金属学报, 2018, 54(12): 1735-1744. [2] 李克俭,蔡志鹏,李轶非,潘际銮. FB2马氏体耐热钢中Laves相在焊接过程中演化行为的研究*[J]. 金属学报, 2016, 52(6): 641-648. Viewed Full text Abstract Cited   Shared      Discussed