發(fā)布時(shí)間：2019-01-30 11:56

【摘要】：為探究鍛造比對(duì)H13模具鋼晶粒組織遺傳性的影響,在實(shí)驗(yàn)室條件下對(duì)H13模具鋼進(jìn)行真空冶煉,并加工成鍛造比不同的鍛件。觀察鍛造前后、不同鍛造比下以及鍛件在進(jìn)行860℃等溫球化退火后的金相組織變化。研究結(jié)果表明:鍛造比為1時(shí),經(jīng)等溫球化退火后H13模具鋼晶粒保持了原試樣的組織形態(tài),具有明顯的遺傳現(xiàn)象;隨著鍛造比的增大,晶粒度增加,晶粒細(xì)化,晶粒組織的遺傳性減弱;當(dāng)鍛造比為4時(shí),晶粒度達(dá)到8.1,達(dá)到超細(xì)晶粒等級(jí),晶粒組織的遺傳現(xiàn)象基本消除;隨著鍛造比的增大,晶粒破碎明顯增加,弱化了其組織的遺傳性。
[Abstract]:In order to investigate the effect of forging ratio on the grain structure and heredity of H13 die steel, vacuum smelting of H13 die steel was carried out under laboratory conditions, and forging parts with different forging ratios were obtained. The microstructure changes of the forging at 860 鈩，

本文編號(hào)：2418104