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摩托車發(fā)動機用Ti-Al-Fe-Mo氣門的制備及性能表征
作者:
作者單位:

1.廣東省科學(xué)院 廣東省材料與加工研究所;2.中南大學(xué);3.江門天釔金屬工業(yè)有限公司

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中圖分類號:

TF12；TG146.2

基金項目:

國家自然科學(xué)基金資助(51404077)；廣州市對外科技合作專項(201508030032)；廣東省自然科學(xué)基金 (2015A030313775)；廣東省科學(xué)院實施創(chuàng)新驅(qū)動發(fā)展能力建設(shè)專項(2017GDASCX-0117、2018GDASCX-0117)；廣東省公益研究與能力建設(shè)專項(2017A070702019)；廣州市科技計劃項目(ZWY201704003)；廣東省材料與加工研究所創(chuàng)新能力建設(shè)項目(2017A070701029)


Preparation and properties characterization of Ti-Al-Fe-Mo valves for motorcycle engines
Author:
Affiliation:

1.Institute for Materials and Processes of Guangdong Province,Guangdong Academy of Sciences;2.Jiangmen TYAN Metal Industry Company Limited

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    摘要:

    以Ti粉和Al、Fe、Mo等元素粉末為原料,采用粉末冶金工藝制備了Ti-Al-Fe-Mo合金,并最終制成摩托車發(fā)動機用鈦氣門,研究了鈦合金制備過程中的組織和性能演變規(guī)律,考察了鈦氣門的裝機試驗使用效果。結(jié)果表明,采用粉末冶金工藝制備的Ti-Al-Fe-Mo合金具有優(yōu)良的綜合性能,其抗拉強度為1232 MPa,屈服強度為1186 MPa,延伸率為6.5 %,硬度為49 HRC。在鈦合金表面涂覆TiN硬質(zhì)耐磨涂層后,制成的鈦氣門可滿足摩托車發(fā)動機的裝機測試要求。與使用鋼制氣門相比,使用鈦氣門可以使發(fā)動機的功率和扭矩提高約12%,油耗降低1%,并顯著降低噪音。

    Abstract:

    Ti-Al-Fe-Mo alloy was prepared by powder metallurgy method with titanium, aluminum, molybdenum and iron powders used as raw materials, and the alloy was used to fabricate valves for motorcycle engines. The microstructure as well as performance evolution of the alloy during the preparing process was investigated. The performances of motorcycle engines assembled with Ti valves were also tested. The results show that Ti-Al-Fe-Mo alloy prepared by powder metallurgy has excellent comprehensive performances with ultimate tensile strength 1232 MPa, yield strength 1186 MPa, elongation 6.5% and hardness 49 HRC. The fabricated valves after coating TiN can meet the requirement of on board tests of the motorcycle engine. Compared with assembling steel valves, power and torque of the motorcycle engines assembled with Ti valves are improved by about 12%, fuel consumption rate is reduced by 1% and the noise is also significantly lowered.

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陳峰,閆志巧,許榮君,劉彬,林國亮.摩托車發(fā)動機用Ti-Al-Fe-Mo氣門的制備及性能表征[J].稀有金屬材料與工程,2019,48(10):3297~3301.[Chen Feng, Yan Zhiqiao, Xu Rongjun, Liu Bin, Lin Guoliang. Preparation and properties characterization of Ti-Al-Fe-Mo valves for motorcycle engines[J]. Rare Metal Materials and Engineering,2019,48(10):3297~3301.]
DOI：10.12442/j. issn.1002-185X.20180810

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  • 收稿日期:2018-07-26
  • 最后修改日期:2018-08-17
  • 錄用日期:2018-10-08
  • 在線發(fā)布日期: 2019-11-01
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