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焊接热循环对Ni-Fe基合金高温力学性能的影响
吴栋; 陆善平; 李殿中
2014-09-25
Source Publication焊接学报
Issue9Pages:69-72+4
Abstract采用焊接热模拟试验,分析了焊接热循环对一种700℃超超临界火电机组高温部件候选材料——Ni-Fe基高温合金组织和高温性能的影响.结果表明,焊接热循环过程使合金中γ'相以及MC碳化物大量固溶.700℃持久试验中HAZ试样在400 MPa的持久断裂时间低于母材,300和350 MPa的持久断裂时间与母材相当.随着持久试验进行,HAZ组织中的晶界逐渐析出M23C6,晶内重新析出大量γ'相,使HAZ的持久性能逐渐恢复.高温焊接热循环使MC发生部分溶解,为M23C6在后续持久试验时效中的析出提供了C元素.
description.department中国科学院金属研究所沈阳材料科学国家(联合)实验室
Keyword镍铁基高温合金 焊接热循环 持久断裂
Language中文
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73575
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
吴栋,陆善平,李殿中. 焊接热循环对Ni-Fe基合金高温力学性能的影响[J]. 焊接学报,2014(9):69-72+4.
APA 吴栋,陆善平,&李殿中.(2014).焊接热循环对Ni-Fe基合金高温力学性能的影响.焊接学报(9),69-72+4.
MLA 吴栋,et al."焊接热循环对Ni-Fe基合金高温力学性能的影响".焊接学报 .9(2014):69-72+4.
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