本文選題：冷軋雙相鋼 + 連續(xù)退火��； 參考：《鋼鐵研究學(xué)報(bào)》2015年02期

【摘要】：采用帶鋼連續(xù)退火模擬試驗(yàn)機(jī),研究了連續(xù)退火過程中加熱速率、兩相區(qū)保溫溫度和過時(shí)效溫度對冷軋雙相鋼DP980組織和性能的影響規(guī)律。研究結(jié)果表明,適當(dāng)提高加熱速率有利于馬氏體晶粒的細(xì)化和帶狀組織的改善,當(dāng)加熱速率達(dá)到45℃/s時(shí)可獲得較高的強(qiáng)度和塑性。退火溫度直接決定了硬質(zhì)第二相的體積分?jǐn)?shù)、分布和形貌,在800℃左右進(jìn)行退火保溫可以獲得良好的綜合性能,保溫溫度過低或過高都會(huì)導(dǎo)致強(qiáng)塑性匹配較差。隨著過時(shí)效溫度的降低,強(qiáng)度升高,伸長率下降,試驗(yàn)鋼退火后加工硬化系數(shù)明顯增大。
[Abstract]:The effects of heating rate, two-phase holding temperature and overaging temperature on the microstructure and properties of cold-rolled dual-phase steel DP980 during continuous annealing were studied by using a continuous annealing simulator. The results show that proper increase of heating rate is beneficial to the refinement of martensite grain and the improvement of banded structure. When heating rate reaches 45 鈩，

本文編號：1986990