热时效对多元微合金化310S不锈钢显微组织和冲击性能的影响
Effect of Thermal Aging on Microstructure and Impact Property of Multi-micro-alloying 310S Strainless Steel
摘 要
复合添加钼、铌、钨和钽等元素对310S不锈钢进行多元微合金化，固溶后分别在不同温度（650，800℃）和不同时间（500，1000，2 000 h）进行热时效处理，研究了热时效对试验钢显微组织和冲击性能的影响。结果表明：在650℃时效处理后，试验钢显微组织为奥氏体，第二相除了M23C6相外还存在Fe2MoC相和Cr7C3相；在800℃时效处理后，试验钢晶内有大量针状第二相析出；试验钢在不同温度时效处理后，随着时效时间的延长，其冲击吸收功均逐渐降低；和650℃时效相比，在800℃时效处理后试验钢的冲击吸收功降幅增大，断裂方式由韧性断裂向脆性沿晶断裂转变。
微合金化
热时效
冲击性能
310S stainless steel
micro-alloying
thermal aging
impact property
Abstract
310S stainless steel was multi-micro-alloyed by composite addition of molybdenum, niobium and tungsten, etc., and then treated by thermal aging at different temperatures (650,800℃) for different times (500,1 000,2 000 h) after solution treatment. The effects of thermal aging on microstructure and impact property of the tested steel were studied. The results show that after aging at 650℃, the microstructure of the tested steel consisted of austenite. In addition to M23C6 phase, there were also Fe2MoC phase and Cr7C3 phase in the second phase. A large number of needle-like second phases precipitated in the grain of the tested steel after aging at 800℃. After aging at different temperatures, the impact absorption energy of the tested steel decreased gradually with the aging time prolonging. Compared with that after 650℃ aging treatment, the impact absorbing energy of the tested steel decreased greatly after aging at 800℃, and the fracture mode changed from ductile fracture into brittle intergranular fracture.
中图分类号 TL341 DOI 10.11973/jxgccl201907012
所属栏目 材料性能及应用
基金项目 国家国际科技合作专项项目（2015DFR60370）
收稿日期 2018/5/15
修改稿日期 2019/6/13
网络出版日期
作者单位点击查看
备注邱水(1993-),男,云南曲靖人,硕士研究生
引用该论文: QIU Shui,TANG Rui,WANG Hao,WEN Donghui. Effect of Thermal Aging on Microstructure and Impact Property of Multi-micro-alloying 310S Strainless Steel[J]. Materials for mechancial engineering, 2019, 43(7): 54～58
邱水,唐睿,王浩,温冬辉. 热时效对多元微合金化310S不锈钢显微组织和冲击性能的影响[J]. 机械工程材料, 2019, 43(7): 54～58
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】夏榜样, 杨平, 王连杰, 等. 超临界水冷堆CSR1000堆芯初步概念设计[J]. 核动力工程, 2013, 34(1):9-14.
【2】熊茹. SCWR候选包壳材料310S不锈钢应用性能研究[D]. 哈尔滨:哈尔滨工程大学, 2014.
【3】PENG B C, ZHANG H X, HONG J, et al. Effect of aging on the impact toughness of 25Cr-20Ni-Nb-N steel[J]. Materials Science and Engineering:A, 2010, 527(7/8):1957-1961.
【4】XU S, AMIRKHIZ B S. Mechanical properties of fuel cladding candidate alloys for canadian SCWR concept[J]. JOM, 2016, 68(2):469-474.
【5】NIKULIN I, KIPELOVA A, KAIBYSHEV R. Effect of high-temperature exposure on the mechanical properties of 18Cr-8Ni-W-Nb-V-N stainless steel[J]. Materials Science and Engineering:A, 2012, 554(5):61-66.
【6】KIM S B, PAIK K W, KIM Y G. Effect of Mo substitution by W on high temperature embrittlement characteristics in duplex stainless steels[J]. Materials Science and Engineering:A, 1998, 247(1/2):67-74.
【7】WEN D H, JIANG B B, WANG Q, et al. Influences of Mo/Zr minor-alloying on the phase precipitation behavior in modified 310S austenitic stainless steels at high temperatures[J]. Materials & Design, 2017, 128:34-46.
【8】SASIKALA G, RAY S K, MANNAN S L. Kinetics of transformation of delta ferrite during creep in a type 316(N) stainless steel weld metal[J]. Materials Science and Engineering:A, 2003, 359(1/2):86-90.
【9】邢佳,卫英慧,侯利锋,等.HR3C不锈钢时效过程中铌的析出规律及其对性能的影响[J].钢铁研究学报,2014,26(12):54-59.
【10】郑子杰. HR3C钢管时效冲击韧性大幅降低的原因分析[J]. 锅炉技术, 2011, 42(4):46-48.
【11】ANDREWS K W, HUGHES H, DYSON D J. Constitution diagrams for Cr-Mo-V steels[J]. J. Iron Steel Inst., 1972, 210(5):337-350.
【12】井上,明久,増本,健.溶融状態より超急冷した高碳素-高クロム鋼の焼もどしに伴う碳化物反応(M3C→M7C3→M23C6)の透過電子顕微鏡観察[J]. 日本金属学会誌, 1978, 42(8):787-795.
【13】杜宝帅,魏玉忠,张忠文,等.高温服役4.2万小时超超临界机组用HR3C钢组织与性能[J].材料热处理学报,2014, 35(12):84-89.
【2】熊茹. SCWR候选包壳材料310S不锈钢应用性能研究[D]. 哈尔滨:哈尔滨工程大学, 2014.
【3】PENG B C, ZHANG H X, HONG J, et al. Effect of aging on the impact toughness of 25Cr-20Ni-Nb-N steel[J]. Materials Science and Engineering:A, 2010, 527(7/8):1957-1961.
【4】XU S, AMIRKHIZ B S. Mechanical properties of fuel cladding candidate alloys for canadian SCWR concept[J]. JOM, 2016, 68(2):469-474.
【5】NIKULIN I, KIPELOVA A, KAIBYSHEV R. Effect of high-temperature exposure on the mechanical properties of 18Cr-8Ni-W-Nb-V-N stainless steel[J]. Materials Science and Engineering:A, 2012, 554(5):61-66.
【6】KIM S B, PAIK K W, KIM Y G. Effect of Mo substitution by W on high temperature embrittlement characteristics in duplex stainless steels[J]. Materials Science and Engineering:A, 1998, 247(1/2):67-74.
【7】WEN D H, JIANG B B, WANG Q, et al. Influences of Mo/Zr minor-alloying on the phase precipitation behavior in modified 310S austenitic stainless steels at high temperatures[J]. Materials & Design, 2017, 128:34-46.
【8】SASIKALA G, RAY S K, MANNAN S L. Kinetics of transformation of delta ferrite during creep in a type 316(N) stainless steel weld metal[J]. Materials Science and Engineering:A, 2003, 359(1/2):86-90.
【9】邢佳,卫英慧,侯利锋,等.HR3C不锈钢时效过程中铌的析出规律及其对性能的影响[J].钢铁研究学报,2014,26(12):54-59.
【10】郑子杰. HR3C钢管时效冲击韧性大幅降低的原因分析[J]. 锅炉技术, 2011, 42(4):46-48.
【11】ANDREWS K W, HUGHES H, DYSON D J. Constitution diagrams for Cr-Mo-V steels[J]. J. Iron Steel Inst., 1972, 210(5):337-350.
【12】井上,明久,増本,健.溶融状態より超急冷した高碳素-高クロム鋼の焼もどしに伴う碳化物反応(M3C→M7C3→M23C6)の透過電子顕微鏡観察[J]. 日本金属学会誌, 1978, 42(8):787-795.
【13】杜宝帅,魏玉忠,张忠文,等.高温服役4.2万小时超超临界机组用HR3C钢组织与性能[J].材料热处理学报,2014, 35(12):84-89.
相关信息
