离心铸造40Cr/Q345B双金属结合层的热变形行为及热加工图

裴蒙蒙; 齐会萍; 秦芳诚; 李永堂

doi:10.15980/j.tzzz.2021.08.022

应用·离心铸造 | 浏览量 : 0 下载量: 10 CSCD: 0

PDF
导出
分享
收藏
专辑

离心铸造40Cr/Q345B双金属结合层的热变形行为及热加工图
Hot Deformation Behavior and Processing Maps of 40Cr/Q345B Bimetallic Bonding Layer by Centrifugal Casting
2021年41卷第8期页码：1031-1036
纸质出版日期： 2021 ，
DOI： 10.15980/j.tzzz.2021.08.022

扫描看全文

裴蒙蒙, 齐会萍, 秦芳诚, 等. 离心铸造40Cr/Q345B双金属结合层的热变形行为及热加工图[J]. 特种铸造及有色合金杂志, 2021,41(8):1031-1036.

Pei Mengmeng, Qi Huiping, Qin Fangcheng, et al. Hot Deformation Behavior and Processing Maps of 40Cr/Q345B Bimetallic Bonding Layer by Centrifugal Casting[J]. Special Casting & Nonferrous Alloys, 2021,41(8):1031-1036.
裴蒙蒙, 齐会萍, 秦芳诚, 等. 离心铸造40Cr/Q345B双金属结合层的热变形行为及热加工图[J]. 特种铸造及有色合金杂志, 2021,41(8):1031-1036. DOI： 10.15980/j.tzzz.2021.08.022.

Pei Mengmeng, Qi Huiping, Qin Fangcheng, et al. Hot Deformation Behavior and Processing Maps of 40Cr/Q345B Bimetallic Bonding Layer by Centrifugal Casting[J]. Special Casting & Nonferrous Alloys, 2021,41(8):1031-1036. DOI： 10.15980/j.tzzz.2021.08.022.

摘要

以离心铸造40Cr/Q345B双金属为研究对象

基于Gleeble-3500热模拟试验机

在变形温度为1 223～1 473 K

应变速率为0.005～1 s

-1

变形量为60%条件下

进行恒温压缩试验

对含40Cr/Q345B双金属结合层的金属热变形行为进行研究

建立了本构方程及热加工图。结果表明

离心铸造40Cr/Q345B双金属结合层的流变应力随着温度的上升和应变速率的降低而减小

热变形激活能为241.589 kJ·mol

-1

。基于热加工图及微观组织

确定了热加工工艺参数范围:变形温度为1 293～1 373 K、应变速率为0.5～1 s

-1

。

Abstract

The thermostatic compression experiment of centrifugal casting 40 Cr/Q345 B bimetal was conducted under deformation temperature of 1 223～1 473 K

strain rate of 0.005～1 s

-1

and deformation rate of 60% based on Gleeble-3500 thermal simulation testing machine. The thermal deformation behavior of 40 Cr/Q345 B bimetal bonding layer by centrifugal casting was investigated and the thermal processing diagram was established.The results indicate that the rheological stress of 40 Cr/Q345 B bimetal is decreased with the increase of temperature and the decrease of strain rate

and the thermal deformation activation energy is 241.589 kJ·mol

-1

. Based on the hot working map and microstructure

the parameters of hot working were determined as follows: deformation temperature of 1 293～1 373 K

strain rate of 0.5～1 s

-1