3Cr1Mo0.25V钢SHCCT曲线测定与分析

物理测试, 2008, 26(1): 1-0.

3Cr1Mo0.25V钢SHCCT曲线测定与分析

崔占全 , 康国旺 , 张向红 , 翟进坡 , 曹国洋 , 王洪明 , 孙晓光

1.1.燕山大学材料学院，河北秦皇岛 066004；2. 山海关造船厂河北秦皇岛 066004；3.中国一重集团公司，黑龙江齐齐哈尔 161042

1.1.Yanshan University, Qinhuangdao 066004, Hebei, China

2. 2.Shanhaiguan Dockyard，Qinhuangdao 066004, Hebei, China

3.3.China First Heavy Industry Ltd, Qiqihar 161042, Heilongjinag, China

关键词： SHCCT图 , Gleeble physical simulation , microstructure , mechanical property

Measuration and Analysis of SHCCT Curve for 3Cr1Mo0.25V Steel

CUI Zhanquan , KANG Guowang , ZHANG Xianghong , ZHAI Jinpo , CAO Guoyang , WANG Hongming , SUN Xiaoguang

Keywords： SHCCT , Gleeble物理模拟 , 组织 , 性能

基于焊接物理模拟技术，在Gleeble3500热模拟试验机上，采用不同t8/5，对3Cr1Mo0.25V钢焊接热影响区粗晶区的热循环过程进行了模拟。同时，利用热膨胀法测定了模拟焊接热影响区的奥氏体连续冷却转变曲线。观察了模拟粗晶区的光学显微组织，测定了相应的维氏硬度，分析了合金元素对3Cr1Mo0.25V钢焊接粗晶区奥氏体连续冷却转变组织及其性能的影响。试验结果为3Cr1Mo0.25V钢焊接工艺的选取和制定提供了参考。

Based on physical simulation of welding, the simulation of coarsegrain heat affected zone(CGHAZ) of 3Cr1Mo0.25V under the different t8/5s are carried out by means of thermal simulative tester. The continuous cooling transformation of austenite in simulated HAZ was measured through thermal expansion curve. The microstructures of CGHAZ were observed, and the Vickers hardness were measured. In addition, the influence of alloy elements contained in 3Cr1Mo0.25V on the phase transformation and the mechanical properties was discussed. The mentioned above results have laid a foundation for optimizing the welding process.

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