通过高周疲劳性能测试和组织形貌观察,研究了K416B镍基高温合金700℃的高周疲劳行为.结果表明,在700℃和应力比R=-1条件下,合金疲劳寿命随着应力的升高而减小,高周疲劳强度为175 MPa;在低应力条件"/>
Search
ChatPaper
AI Writing
analysis
Analysis
编组
Open Data
more
More
RankingsMust ReadingJournal&ConferenceAI TRAI HistoryMaster Reading TreeXiaomai's Star TalentsTrajectoryTalentNDI TrackerAI sign LanguageOpen
VIPCreated with Sketch.

K416B镍基铸造高温合金的700℃高周疲劳行为

Xie Jun,Yu Jinjiang,Sun Xiaofeng,Jin Tao

Acta Metallurgica Sinica（2016）

Cited 3|Views6
No score
Abstract
通过高周疲劳性能测试和组织形貌观察,研究了K416B镍基高温合金700℃的高周疲劳行为.结果表明,在700℃和应力比R=-1条件下,合金疲劳寿命随着应力的升高而减小,高周疲劳强度为175 MPa;在低应力条件下,形变位错在γ基体中发生不同取向滑移,随着应力增加,位错剪切γ’相,形成层错;在拉压高周疲劳期间,合金中开动多个滑移系,并沿不同方向发生扭曲变形,在γ+γ’共晶及碳化物附近产生应力集中,致使裂纹源萌生于合金表面附近的共晶及块状碳化物处.随着高周疲劳进行,裂纹在扩展区沿枝晶间扩展,并在瞬断区发生典型的解理断裂.
More
Translated text
Key words
K416B Ni-based superalloy,high-cycle fatigue,deformation mechanism,fracture feature
AI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined