本文選題：連續(xù)退火　切入點：中錳TRIP鋼　出處：《材料熱處理學(xué)報》2017年04期 　論文類型：期刊論文

【摘要】：利用拉伸試驗機(jī)、掃描電鏡、透射電鏡以及X射線衍射分析了臨界退火溫度和臨界退火時間對中錳鋼的微觀組織以及力學(xué)性能的影響。研究結(jié)果表明:在本文所設(shè)計工藝條件下,由于臨界退火時間短導(dǎo)致組織中的滲碳體無法完全溶解,其微觀組織主要由鐵素體、殘留奧氏體以及滲碳體所構(gòu)成;試樣在650~700℃之間退火能獲得良好性能,但是不同臨界退火溫度出現(xiàn)良好力學(xué)性能所需要的時間不一樣,溫度越高,所需要時間越短;675℃退火5 min時有最佳的力學(xué)性能,抗拉強(qiáng)度約為980 MPa,斷后伸長率約為30%,強(qiáng)塑積接近30 GPa·%。
[Abstract]:Using a tensile tester, a scanning electron microscope, The effects of critical annealing temperature and critical annealing time on the microstructure and mechanical properties of medium manganese steel were analyzed by transmission electron microscopy and X-ray diffraction. Due to the short critical annealing time, the cementite in the microstructure can not be completely dissolved, and the microstructure is mainly composed of ferrite, retained austenite and cementite. However, the time required for the appearance of good mechanical properties at different critical annealing temperatures is different. The higher the temperature, the shorter the time required for annealing for 5 min at 675 鈩，

本文編號：1626362