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| 钎焊参数对钨合金/钢钎焊接头性能的影响 |
| Effects of Brazing Parameters on Joint Properties of Tungsten Alloy/Steel |
| Received:January 18, 2017 Revised:March 10, 2017 |
| DOI：10.3969/j.issn.1674-6457.2017.02.016 |
| 中文关键词: 钨合金 钢 钎焊 |
| 英文关键词: tungsten alloy steel brazing |
| 基金项目:重庆理工大学研究生创新基金（YCX2015215） |
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| 中文摘要: |
| 目的 研究钎焊温度和保温时间对接头性能的影响。方法 在氩气氛围中用AgCu30 钎料对钨合金（91WNiFe）与超高强合金钢（DT1900 类ASME100）进行钎焊，并对接头进行组织观察和力学性能测试。结果 通过改变钎焊温度（780~840 ℃），发现随着钎焊温度增加，钎焊接头钎缝中的气孔所占体积减少，钎焊接头的剪切强度先增加后减少；通过改变保温时间（0~30 min），发现随着保温时间的增加，钎焊接头钎缝中的气孔所占体积减少，钎焊接头的剪切强度先增大后趋于平缓。结论 当钎焊温度为820 ℃和保温时间为30 min 时，钎焊接头的剪切强度达到最大，为107.73 MPa。 |
| 英文摘要: |
| The paper aims to study effects of brazing temperature and holding time on the properties of the joint. The brazing of tungsten alloy (91WNiFe) and ultra high strength alloy steel (ASME100 of DT1900) was carried out by the filler metal of AgCu30 in furnace with argon atmosphere. The microstructure was observed, and mechanical properties of the joint were tested. By changing the brazing temperature (780~840 ℃), the volume of pores in brazed joint decreased and the shear strength of joint increased and then decreased with the increase of the brazing temperature; by changing the holding time (0~30 min), the volume of pores in brazed joint decreased and the shear strength of brazed joint firstly increased and then had flat-lined with the increase of holding time. With brazing temperature of 820 ℃ and holding time of 30min, the shear strength of brazed joints reaches the maximum value of 107.73 MPa. |
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