Effects of Thermal Cycle on Microstructure and Toughness of HAZ of 13MnNiMoR Steel
摘 要
通过系列焊接热模拟试验, 研究了焊接热输入和焊接峰值温度对13MnNiMoR钢焊接热影响区显微组织和冲击韧性的影响。结果表明: 随着焊接热输入的增加, 试验钢粗晶热影响区(CGHAZ)组织中粒状贝氏体的含量增加, 贝氏体铁素体板条尺寸增大, 冲击韧性降低; 随着焊接峰值温度的降低, 热影响区的组织和韧性呈现明显变化, 其中当峰值温度处于γ+α两相区(800 ℃)时, 临界热影响区(ICHAZ)组织中形成多边形铁素体+大量的马氏体/奥氏体(M/A)组元, 严重恶化了冲击韧性, 成为整个热影响区中最薄弱的区域。
Abstract
A group of welding thermal simulation tests for 13MnNiMoR steel were conducted to study the effects of welding heat input and peak temperature on the microstructure and impact toughness of the simulated heat affected zone (HAZ). The results show that with the increase of heat input, the impact toughness and hardness of the coarse-grained heat affected zone (CGHAZ) decreased due to the increases both in the volume fraction of granular bainite and in the size of bainite laths; with the decrease of welding peak temperature, a significant change in the microstructure and toughness was observed. Particularly, when the peak temperature was in the α+β intercritical region (800 ℃), polygonal ferrite with a large amount of martensite/austenite (M/A) constituent formed in the intercritical heat affected zone (ICHAZ). This microstructure led to poor impact toughness and made the ICHAZ become the weakest area in the HAZ.
中图分类号 TG142.1 DOI 10.11973/jxgccl201509008
所属栏目 试验研究
基金项目
收稿日期 2014/2/19
修改稿日期 2015/3/27
网络出版日期
作者单位点击查看
备注杨浩(1986-), 男, 河南南阳人, 工程师, 硕士。
引用该论文: YANG Hao,QU Jin-bo. Effects of Thermal Cycle on Microstructure and Toughness of HAZ of 13MnNiMoR Steel[J]. Materials for mechancial engineering, 2015, 39(9): 37~40
杨浩,曲锦波. 热循环对13MnNiMoR钢焊接热影响区显微组织和韧性的影响[J]. 机械工程材料, 2015, 39(9): 37~40
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参考文献
【1】王香云, 王文先, 李结木, 等. BHW35钢的焊接及接头组织性能[J]. 焊接技术, 2010, 39(4): 14-18.
【2】徐学利, 辛希贤, 智彦利, 等. X80管线钢焊接二次热循环粗晶区的韧性和显微组织研究[J]. 机械工程材料, 2005, 29(12): 49-52.
【3】孙俊生, 陈晔, 栾守成, 等. JG590钢模拟热影响区粗晶区的组织和性能[J]. 机械工程材料, 2007, 31(6): 76-78.
【4】李克勇. 13MnNiMoR钢焊接工艺[J]. 电焊机, 2010, 40(9): 69-72.
【5】潘伍覃. 13MnNiMoR钢制容器的焊接工艺[J]. 焊接技术, 2011, 40(2): 63-64.
【6】刘东雨, 徐鸿, 杨昆, 等. 贝氏体/马氏体复相组织对低碳合金钢韧性的影响[J]. 金属学报, 2004, 40(8): 882-886.
【7】ZHU K Y, OLIVIER B, CARLA O, et al. An approach to define the effective lath size controlling yield strength of bainite[J]. Materials Science and Engineering: A, 2010, 527:6614-6619.
【8】MANGONON P L. Effect of alloying elements on the microstructure and properties of a hot-rolled low-carbon low-alloy bainitic steel[J]. Metallurgical and Materials Transactions: A, 1976, 7(9): 1389-1400.
【9】尚成嘉, 杨善武, 王学敏,等. 低碳贝氏体钢的组织类型及其对性能的影响[J]. 钢铁, 2005, 40(4): 57-61.
【2】徐学利, 辛希贤, 智彦利, 等. X80管线钢焊接二次热循环粗晶区的韧性和显微组织研究[J]. 机械工程材料, 2005, 29(12): 49-52.
【3】孙俊生, 陈晔, 栾守成, 等. JG590钢模拟热影响区粗晶区的组织和性能[J]. 机械工程材料, 2007, 31(6): 76-78.
【4】李克勇. 13MnNiMoR钢焊接工艺[J]. 电焊机, 2010, 40(9): 69-72.
【5】潘伍覃. 13MnNiMoR钢制容器的焊接工艺[J]. 焊接技术, 2011, 40(2): 63-64.
【6】刘东雨, 徐鸿, 杨昆, 等. 贝氏体/马氏体复相组织对低碳合金钢韧性的影响[J]. 金属学报, 2004, 40(8): 882-886.
【7】ZHU K Y, OLIVIER B, CARLA O, et al. An approach to define the effective lath size controlling yield strength of bainite[J]. Materials Science and Engineering: A, 2010, 527:6614-6619.
【8】MANGONON P L. Effect of alloying elements on the microstructure and properties of a hot-rolled low-carbon low-alloy bainitic steel[J]. Metallurgical and Materials Transactions: A, 1976, 7(9): 1389-1400.
【9】尚成嘉, 杨善武, 王学敏,等. 低碳贝氏体钢的组织类型及其对性能的影响[J]. 钢铁, 2005, 40(4): 57-61.
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