不同初始晶粒度大锻件材料35CrMo热变形微观组织演变模型  

Hot deformation microstructure evolution models of heavy forging steel 35CrMo with different initial austenite grain size

作　　者：黄超伟[1] 王敏婷[1] 刘东旭[1] 张静[1] 王俊杰[1] 丁艳[1] 

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004

出　　处：《燕山大学学报》2013年第3期201-205,共5页Journal of Yanshan University

基　　金：河北省自然科学青年基金资助项目(E2012203028);河北省自然科学基金资助项目(E2011203090)

摘　　要：充分考虑初始晶粒度的影响,通过Gleeble-3500热模拟压缩试验,研究了大锻件材料35CrMo钢的高温成形特性。利用金相试验,建立了包含变形温度、应变、应变速率和初始晶粒度四因素的35CrMo钢动态再结晶百分数和晶粒尺寸模型,该模型的建立为后续混晶形成规律研究提供必要理论基础。Hot deformation characteristics of heavy forging steel 35CrMo are studied through Gleeble-3500 thermal-mechanical simulation tests under the condition of different initial austentite grain size.Dynamic recrystallization fraction models and grain size models of steel 35CrMo are established using Gleeble-3500 simulator by determining the deformation temperature,strain,strain rate and initial austentite grain size.These results provide theoretical basis for the subsequent study of mixed grain.

关 键 词：大锻件 动态再结晶 晶粒尺寸 混晶 

分 类 号：TG111.7[金属学及工艺—物理冶金]