|
|
|
| Precipitation behavior of medium-carbon steel for fracture splitting connecting rod |
| CHEN Si-lian1，ZHAO Xiao-li1，HUI Wei-jun2，DAI Guan-wen3，DONG Han1 |
1. Technology Operations Section， Center Iron and Steel Research Institute， Beijing 100081， China
2. School of Mechanical， Electronic and Control Engineering， Beijing Jiaotong University， Beijing 100044， China
3. Development Department， Shijiazhuang Iron and Steel Co.， Ltd.， Shijiazhuang 050031， Hebei， China |
|
|
|
|
Abstract The microstructure characteristics especially the distribution， morphology and particle size of vanadium carbonitride precipitates in hot-forged medium-carbon micro-alloyed steel for fracture splitting connecting rod with two different vanadium contents (0.15 %， 0.28 %) were examined by OP， TEM and XRD， and their precipitation behavior were analyzed. The results reveal that both the volume fraction of ferrite and the amount of V-rich M(C，N) particles increase， the pearlite interlamellar spacing decreases with increased V content. Further the physical-chemical phase analysis shows that about 48 % and 64 % V of the total in the steel are tied up in the M(C，N) precipitates of the two tested steels， respectively. Meanwhile， the mass percent of fine particles (less than 10 nm) in the two steels is about 42.6 % and 56.7 %， respectively， and the corresponding yield strength increments are 140.0 and 232.6 MPa. It’s concluded that medium-carbon steel with higher V content possesses not only has comparable tensile strength and impact energy absorbed with that of conventional steel C70S6 for fracture splitting connecting rod， but also has much higher yield strength and yield strength ratio， and therefore， is more suitable to fabricate high performance fracture splitting connecting rod.
|
|
Received: 02 September 2014
Published: 06 July 2015
|
|
|
|
| [1] |
Gu Z，Yang S，Ku S，et al. Fracture splitting technology of automobile engine connecting rod [J]. Int J Adv Manuf Technol，2005, 25:883-887.
|
| [1] |
Gu Z，Yang S，Ku S，et al. Fracture splitting technology of automobile engine connecting rod [J]. Int J Adv Manuf Technol，2005, 25:883-887.
|
| [2] |
Park H, Ko Y S, Jung S C, et al. Development of fracture split steel connecting rods[R]. SAE Technical Paper, 2003-01-1309.
|
| [2] |
Park H, Ko Y S, Jung S C, et al. Development of fracture split steel connecting rods[R]. SAE Technical Paper, 2003-01-1309.
|
| [3] |
姚贵升. 汽车裂解连杆用钢的开发[J]. 汽车工艺与材料, 2004, (11):6-9.
|
| [3] |
姚贵升. 汽车裂解连杆用钢的开发[J]. 汽车工艺与材料, 2004, (11):6-9.
|
| [4] |
刘智雄，惠卫军，刘荣佩. 连杆用C70S6钢的胀断性能[J]. 特殊钢, 2011, 32(5):66-68.
|
| [4] |
刘智雄，惠卫军，刘荣佩. 连杆用C70S6钢的胀断性能[J]. 特殊钢, 2011, 32(5):66-68.
|
| [5] |
長谷川達也,佐野直幸. 非調質高強度クラツキングコンロツド用鋼[J]. 熱処理, 2007, 47(6):343-349.
|
| [5] |
長谷川達也,佐野直幸. 非調質高強度クラツキングコンロツド用鋼[J]. 熱処理, 2007, 47(6):343-349.
|
| [6] |
Zhang X Z, Cai Q Z, Zhou G F, et al. Microstructure and mechanical properties of V-Ti-N microalloyed steel used for fracture splitting connecting rod[J]. J Mater Sci, 2011, 46:1789-95.
|
| [6] |
Zhang X Z, Cai Q Z, Zhou G F, et al. Microstructure and mechanical properties of V-Ti-N microalloyed steel used for fracture splitting connecting rod[J]. J Mater Sci, 2011, 46:1789-95.
|
| [7] |
惠卫军，刘智雄，张英建，等. 一种新型胀断连杆用中碳非调质钢[J]. 钢铁，2012, 47(1):69-73
|
| [7] |
惠卫军，刘智雄，张英建，等. 一种新型胀断连杆用中碳非调质钢[J]. 钢铁，2012, 47(1):69-73
|
| [8] |
Elwazri AM, Wanjara P, Yue S. Effect of prior-austenite grain size and transformation temperature on nodule size of microalloyed hypereutectoid steels[J]. Metall Mater Trans A, 2005, 36:2297-2305.
|
| [8] |
Elwazri AM, Wanjara P, Yue S. Effect of prior-austenite grain size and transformation temperature on nodule size of microalloyed hypereutectoid steels[J]. Metall Mater Trans A, 2005, 36:2297-2305.
|
| [9] |
董成瑞，任海鹏，金同哲，等. 微合金非调质钢[M]. 北京：冶金工业出版社，2000.
|
| [9] |
董成瑞，任海鹏，金同哲，等. 微合金非调质钢[M]. 北京：冶金工业出版社，2000.
|
| [10] |
雍岐龙. 钢铁材料中的第二相[M]. 北京：冶金工业出版社，2006.
|
| [10] |
雍岐龙. 钢铁材料中的第二相[M]. 北京：冶金工业出版社，2006.
|
| [11] |
曹建春，雍岐龙，刘清友，等. 含铌钼钢中微合金碳氮化物沉淀析出及其强化机制[J]. 材料热处理学报，2006, 27(5):51-55.
|
| [11] |
曹建春，雍岐龙，刘清友，等. 含铌钼钢中微合金碳氮化物沉淀析出及其强化机制[J]. 材料热处理学报，2006, 27(5):51-55.
|
| [12] |
曹正，史万富，王敢利，等. 高碳微合金非调质钢连杆研究[J]. 汽车材料与工艺，2000, (12):24-27.
|
| [12] |
曹正，史万富，王敢利，等. 高碳微合金非调质钢连杆研究[J]. 汽车材料与工艺，2000, (12):24-27.
|
| [13] |
蔡爱国. 铌钒微合金中碳钢的微观组织与强度的关系[J]. 钢铁研究学报，1996, 8(2):35-39.
|
| [13] |
蔡爱国. 铌钒微合金中碳钢的微观组织与强度的关系[J]. 钢铁研究学报，1996, 8(2):35-39.
|
| [1] |
WEI Tong-yu, ZOU De-ning, ZHANG Ying-bo, CHEN Wan-wan. Effect of aluminum on microstructure and properties of high alumina ferritic heat resistant steel[J]. Iron and Steel, 2020, 55(6): 80-83. |
| [2] |
CAO Yan-guang, LI Zhao-dong, DING Can-can, ZHANG Jin-wen, YONG Qi-long, GAO Jian-bing. Effect of niobium addition on hardenability of high-speed railway axle steel[J]. Iron and Steel, 2020, 55(6): 107-112. |
| [3] |
HE Ya-yuan,LI Li-wei,YIN Yun-yang,DENG Zhao-jun. Evolution of microstructure and properties of thickness section of wearresistant steel[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(6): 512-518. |
| [4] |
SHAO Cheng-wei, WANG Jun-tao, ZHAO Xiao-li, HUI Wei-jun. Microstructure and mechanical properties of intercritically annealed Al-contain medium Mn steel[J]. Iron and Steel, 2020, 55(5): 87-93. |
| [5] |
ZHOU Ren-yuan, ZHU Li-hui, LI Shi-xian, ZHAI Guo-li. Improvement of reheat-cracking susceptibility and microstructure of T23 steel[J]. Iron and Steel, 2020, 55(3): 80-86. |
| [6] |
FAN Xiu-feng， YAN Yong-wang， LIU Su-xia， LUO Long， LI Xiao-wei， HUO Wen-xia. Discussion about CuO doping on microstructure and properties of Ni 0.4 Zn 0.6 Fe 2 O 4 ferrite[J]. PHYSICS EXAMINATION AND TESTING, 2020, 38(3): 13-. |
|
|
|
|
2015, Vol. 50 
