本文選題：鐵素體不銹鋼　切入點：溫度場　出處：《材料工程》2015年02期 　論文類型：期刊論文

【摘要】：采用紅外熱像法研究了443鐵素體不銹鋼在疲勞試驗過程中表面溫度場的變化規(guī)律,提出了采用ΔT-Nf曲線預(yù)測疲勞壽命的方法。結(jié)果表明:溫升極限值ΔT=3.18℃,即當(dāng)ΔT3.18℃時,試樣發(fā)生疲勞斷裂,與實測溫升值3.49℃相比,誤差為8.89%。利用ΔT-Nf曲線預(yù)測443鐵素體不銹鋼在5×106循環(huán)次數(shù)下的疲勞強度為277.97MPa,與傳統(tǒng)方法測得結(jié)果284.45MPa相對誤差為2.28%。
[Abstract]:The variation of surface temperature field of 443 ferrite stainless steel during fatigue test was studied by infrared thermal imaging method. A method of predicting fatigue life by 螖 T-Nf curve was put forward. The results showed that the limit value of temperature rise 螖 T ~ (3. 18) 鈩，

本文編號：1575318