不同冷速对单向热压35CrMo钢连接界面上孔隙愈合的影响

doi:10.3901/JME.2021.10.169

机械工程学报 ›› 2021, Vol. 57 ›› Issue (10): 169-177.doi: 10.3901/JME.2021.10.169

扫码分享

不同冷速对单向热压35CrMo钢连接界面上孔隙愈合的影响

曾真¹, 张坤¹, 郭正洪¹, 顾剑锋^1,2

1. 上海交通大学材料改性与数值模拟研究所上海 200240;
2. 上海交通大学上海市激光制造与材料改性重点实验室上海 200240

收稿日期:2020-10-15 修回日期:2021-01-28 出版日期:2021-05-20 发布日期:2021-07-23
通讯作者: 郭正洪(通信作者),男,1970年出生,博士,副教授,博士研究生导师。主要研究方向为先进高强度钢的组织与性能调控。E-mail:zhenghongguo@sjtu.edu.cn
作者简介:曾真,男,1996年出生。主要研究方向为大锻件用钢的热压连接工艺。E-mail:martin0248@sjtu.edu.cn
基金资助:
国家重点研发计划资助项目（2018YFA0702900）。

Effect of Cooling Rates on the Porosity Healing at Joint Interface of 35CrMo Steel after Unidirectional Hot Pressing

ZENG Zhen¹, ZHANG Kun¹, GUO Zhenghong¹, GU Jianfeng^1,2

1. Institute of Materials Modification and Modeling, Shanghai Jiao Tong University, Shanghai 200240;
2. Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiao Tong University, Shanghai 200240

Received:2020-10-15 Revised:2021-01-28 Online:2021-05-20 Published:2021-07-23

摘要/Abstract

摘要： 采用35CrMo锻件用钢为载体研究了模拟构筑成形时连接界面的微观特征。在形变奥氏体动态再结晶基础上，基于固态相变机制，以孔隙率变化为衡量标准，对比单向热压模拟试验过程中不同冷速与试样连接界面上孔隙愈合程度的关系，明确了慢冷时形成的铁素体-珠光体，可通过扩散性方式跨越连接界面生长，形成晶格连续性，增强愈合作用；而快冷时形成的马氏体，其生长基于切变过程，无法跨越连接界面，对愈合没有贡献。相变热力学及动力学的初步计算表明，铁素体在生长初期的生长速率与奥氏体再结晶相近，但较低的驱动力导致低的形核率及逐渐降低的生长速率，可能是扩散型固态相变对连接界面附近的孔隙愈合能力不如奥氏体再结晶的原因之一。

关键词: 35CrMo钢, 连接界面, 固态相变, 构筑成形, 孔隙愈合

Abstract: The 35CrMo forging steel is selected as the sample to study the microstructural feature of the joint interface after addictive forging simulation. Based on the dynamic recrystallization of deformed austenite related to hot compressive bonding, the relationship between different cooling rates and the porosity healing degree at joint interface is investigated through unidirectional hot pressing experiments. The solid-state transformation mechanism clearly shows that the ferrite-pearlite phase transformation induced by slow cooling can form lattice continuity by growing across the joint interface, thereby enhancing the healing degree effectively. Conversely, the martensitic transformation caused by rapid cooling cannot form lattice continuity across the joint interface, hence having no contribution to the healing degree. The preliminary calculation according to thermodynamics and kinetics together shows that the growth rate of ferrite in early stage is similar to that of austenite recrystallization, but its lower driving force leads to the low nucleation rate and gradually decreased growth rate, which may be responsible for its relatively weak healing ability compared to the dynamic recrystallization.

Key words: 35CrMo steel, joint interface, solid state transformation, additive forging, porosity healing

中图分类号:

TG156

曾真, 张坤, 郭正洪, 顾剑锋. 不同冷速对单向热压35CrMo钢连接界面上孔隙愈合的影响[J]. 机械工程学报, 2021, 57(10): 169-177.

ZENG Zhen, ZHANG Kun, GUO Zhenghong, GU Jianfeng. Effect of Cooling Rates on the Porosity Healing at Joint Interface of 35CrMo Steel after Unidirectional Hot Pressing[J]. Journal of Mechanical Engineering, 2021, 57(10): 169-177.

参考文献

[1] 孙明月,徐斌,谢碧君,等. 大锻件均质化构筑成形研究进展[J]. 科学通报,2020,65(27):3044-3058. SUN Mingyue,XU Bin,XIE Bijun,et al. Research advances on homogenization manufacturing of heavy components by metal additive forging[J]. Chinese Science Bulletin,2020,65(27):3044-3058.
[2] ZHANG Jianyang,SUN Mingyue,XU Bin,et al.Interfacial microstructural evolution and metallurgical bonding mechanisms for IN718 superalloy joint produced by hot compressive bonding[J]. Metallurgical and Materials Transactions B,2018,49(5):2152-2162.
[3] XIE Bijun,SUN Mingyue,XU Bin,et al. Oxidation of stainless steel in vacuum and evolution of surface oxide scales during hot-compression bonding[J]. Corrosion Science,2019,147:41-52.
[4] XIE Bijun,SUN Mingyue,XU Bin,et al. Dissolution and evolution of interfacial oxides improving the mechanical properties of solid state bonding joints[J]. Materials & Design,2018,157:437-446.
[5] WU H,LEE S,WANG J. Solid-state bonding of iron-based alloys,steel-brass,and aluminum alloys[J]. Journal of Materials Processing Technology,1998,75(3):173-179.
[6] ZHANG Chao,LI Hong,LI Miaoquan. Formation mechanisms of high quality diffusion bonded martensitic stainless steel joints[J]. Science and Technology of Welding and Joining,2014,20(2):115-122.
[7] ZHANG Chao,LI Hong,LI Miaoquan. Detailed evolution mechanism of interfacial void morphology in diffusion bonding[J]. Journal of Materials Science & Technology,2016,32(3):259-264.
[8] ZHANG Chao,LI Hong,LI Miaoquan. Role of surface finish on interface grain boundary migration in vacuum diffusion bonding[J]. Vacuum,2017,137:49-55.
[9] 刘玉林,罗永春,赵丹,等. 高熵合金(CoCrFeMnNi)/铜真空扩散连接的界面行为及接头性能研究[J]. 机械工程学报,2017,53(2):84-91. LIU Yulin,LUO Yongchun,ZHAO Dan,et al. Interfacial behavior and joint performance of high-entropy alloy CoCrFeMnNi and pure Cu Joints obtained by vacuum diffusion welding[J]. Journal of Mechanical Engineering,2017,53(2):84-91.
[10] 杨宗辉,沈以赴,李晓泉. 自生成钨基高密度合金中间层的钨/钢真空扩散连接[J]. 机械工程学报,2013,49(4):58-63. YANG Zonghui,SHEN Yifu,LI Xiaoquan. Diffusion bonding tungsten to steel in vacuum with tungsten heavy alloy interlayer formed on tungsten surface[J]. Journal of Mechanical Engineering,2013,49(4):58-63.
[11] NOH S,KASADA R,KIMURA A. Solid-state diffusion bonding of high-Cr ODS ferritic steel[J]. Acta Materialia,2011,59(8):3196-3204.
[12] XU Bin,SHAO Chunjuan,SUN Mingyue. Interface bonding of SA508-3 steel under deformation and high temperature diffusion[C/CD]//Proceedings of the 21st International ESAFORM Conference on Material Forming,2018.
[13] REN Xueping,CHEN Xiaohui,XIONG Zhiping. Characterization and analysis of diffusion bonding process in a Cr25Ni7Mo4MnSi duplex stainless steel[J]. Journal of Manufacturing Processes,2018,34:603-613.
[14] HAN W,ZHANG K,WANG B,et al. Superplasticity and diffusion bonding of IN718 superalloy[J]. Acta Metallurgica Sinica(English Letters),2007,20(4):307-312.
[15] YU Hailiang,LIU Xianghua,LI Xinwen,et al. Crack healing in a low-carbon steel under hot plastic deformation[J]. Metallurgical and Materials Transactions A,2013,45(2):1001-1009.
[16] YANG Xiawei,LI Wenya,FENG Yan,et al. Physical simulation of interfacial microstructure evolution for hot compression bonding behavior in linear friction welded joints of GH4169 superalloy[J]. Materials & Design,2016,104:436-452.
[17] SUN Duanjun,LI Chuanwei,XUE Xuan,et al. Optimization scheme of the orientation relationship from crystallographic statistics of variants and its application to lath martensite[J]. Materials & Design,2020,195:1-15.
[18] 戚正风. 金属热处理原理[M]. 北京:机械工业出版社,1987. QI Zhengfeng. Principles of metal heat treatment[M]. Beijing:China Machine Press,1987.
[19] 郭正洪. 固态相变动力学及晶体学[M]. 上海:上海交通大学出版社,2019. GUO Zhenghong. Kinetics and crystallography of solid state transformations[M]. Shanghai:Shanghai Jiao Tong University Press,2019.
[20] 金朝阳. 基于反分析法的热变形低碳钢动态再结晶行为数值模拟[D]. 上海:上海交通大学,2010. JIN Zhaoyang. Modelling and simulation of dynamic recrystallization for hot deformed low carbon steel by inverse analysis method[D]. Shanghai:Shanghai Jiao Tong University,2010.
[21] 张斌,张鸿冰,阮雪榆. 热变形奥氏体先共析铁素体的热力学计算[J]. 上海交通大学学报,2003,37:1517-1521. ZHANG Bin,ZHANG Hongbing,RUAN Xueyu. Thermo dynamic calculations on the proeutectoid ferrite transformation of deformed austenite[J]. Journal of Shanghai Jiao Tong University,2003,37(10):1517-1521.
[22] 徐洲,姚寿山. 材料加工原理[M]. 北京:科学出版社,2003. XU Zhou,YAO Shoushan. Material processing principle[M]. Beijing:Science Press,2003.
[23] SUTTON A,BALLUFFI R. 晶体材料中的界面[M]. 叶飞,顾新福,邱冬,等译. 北京:高等教育出版社,2016. SUTTON A,BALLUFFI R,Interfaces in crystalline materials[M]. Translated by YE Fei,GU Xinfu,QIU Dong,et al. Beijing:Higher Education Press,2016.

不同冷速对单向热压35CrMo钢连接界面上孔隙愈合的影响

Effect of Cooling Rates on the Porosity Healing at Joint Interface of 35CrMo Steel after Unidirectional Hot Pressing

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 5

编辑推荐

Metrics

本文评价

[1]	胡龙, 刘红艳, 成慧梅, 陈维奇, 冯广杰, 叶延洪, 邓德安. 超高强耐磨钢NM500多层多道对接接头残余应力的研究[J]. 机械工程学报, 2024, 60(4): 335-344.
[2]	周意葱, 林起崟, 张宁静, 洪军, 杨楠. 均化接触应力的双线性材料刚度优化设计[J]. 机械工程学报, 2022, 58(1): 212-220.
[3]	李朝峰, 乔瑞环, 苗雪阳, 江雨霖. 螺栓连接界面非线性建模及其参数辨识方法研究[J]. 机械工程学报, 2021, 57(7): 78-86.
[4]	郝文魁;刘智勇;杜翠薇;李晓刚. 35CrMo钢在酸性H2S环境中的应力腐蚀行为与机理[J]. , 2014, 50(4): 39-46.
[5]	刘翠荣;孟庆森;鲁小莹;刘子建. ZrO2电解质陶瓷与Al的阳极键合连接机理分析[J]. , 2008, 44(5): 114-118.