In the past 20 years, China has developed a variety of titanium alloy grades and established a number of standards and specifications for titanium alloy materials, including standards and specifications for ultrasonic inspection. However, any standard needs to be continuously supplemented, modified, and improved under the guidance of scientific theory in the process of production and application, based on a large amount of practical experience, to make it more scientific and practical.

 The history of the establishment and development of China's titanium alloy standards is characterized by making a lot of choices, additions, and modifications based on China's actual situation and its own research results, while referring to similar standards in various countries. There are both scientific and reasonable parts, and due to lack of experience when standards are established, there are inevitably irrational and imperfections. Therefore, constantly summing up experience and comparing and analyzing with other similar standards are very meaningful for the formulation of new standards and the improvement of old standards.

 This research focuses on the

The requirements and regulations of inspection, and the contents and regulations of titanium alloy inspection and bar inspection in the standards and specifications of ultrasonic inspection methods at home and abroad are analyzed. Through analysis and comparison, we can understand the similarities and differences in the ultrasonic inspection and acceptance standards of titanium alloys and the testing methods of titanium alloy bars in various countries, and provide a reference for the future development and revision of titanium alloy ultrasonic inspection standards.

１. Related standards

Company Standards (ＱAS) and the standards of Imperial Metal Industries, one of Rolls-Royce's material suppliers. Domestic standards include China National Standard (GB), China National Military Standard (GJB), and China Aviation Industry Standard (HB). The specific standard numbers and names are as follows:

（1） ＡＭＳ ２３８０Ｂ    ＡｐｐｒｏｖａｌａｎｄＣｏｎｔｒｏｌｏｆＰｒｅ—ｍｉｕｍ—ＱｕａｌｉｔｙＴｉｔａｎｉｕｍＡｌｌｏｙｓ 　　（2）ＡＭＳ２６３ＯＢ     Ｉｎｓｐｅｃｔｉｏｎ，Ｕｈｒａｓｏｎｉｃ，Ｐｒｏｄ—ｕｃｔ０ｖｅｒ０．５Ｉｎｃｈ   （１２．７ａｒｍ）Ｔｈｉｃｋ 　　（3）ＡＭＳ  ２６３１Ｂ    Ｕｈｒａｓｏｎｉｃ Ｉｎｓｐｅｃｔｉｏｎ  ，Ｔｉｔａ—ｎｉｕｍ  ａｎｄＴｉｔａｎｉｕｍ ＡｌｌｏｙＢａｒａｎｄＢｉｌｌｅｔ 　　（4）  ＡＭＳ  ２６３２Ａ      Ｉｎｓｐｅｃｔｉｏｎ，  Ｕｈｒａｓｏｎｉｃ。  ＯｆＴｈｉｎＭａｔｅｒｉａｌｓ，  ０．５  Ｉｎｃｈ   （１２．７ｍｍ）  ａｎｄ Ｕｎｄｅｒ  ｉｎＣｒｏｓｓ—ＳｅｃｔｉｏｎａｌＴｈｉｃｋｎｅｓｓ 　　（5）ＭＩＩ一Ｆ一８３１４２Ａ     Ｆｏｒｇｉｎｇ，ＴｉｔａｎｉｕｍＡｌｌｏｙｓＰｒｅｍｉｕｍ Ｑｕａｌｉｔｙ 　　（6）ＭＩＩ一Ｔ一９０４７Ｇ    Ｔｉｔａｎｉｕｍ  ａｎｄＴｉｔａｎｉｕｍＡ１一ｌｏｙＢａｒｓ   （ＲｏｌｌｅｄｏｒＦｏｒｇｅｄ）  ａｎｄＲｅｆｏｒｇｉｎｇＳｔｏｃｋ，ＡｉｒｃｒａｉｔＱｕａｌｉｔｙ 　　（7）  Ｍ１Ｌ—ＳＴＤ一２１５４      Ｉｎｓｐｅｃｔｉｏｎ，  Ｕｈｒａｓｏｎｉｃ。　Ｗ ｒｏｕｇｈｔＭｅｔａｌｓ，Ｐｒｏｃｅｓｓｆｏｒ 　　（8）  ＢＭＳ７－２４７Ｃ      Ｔｉｔａｎｉｕｍ   ６Ａ１—４Ｖ   ｆｏｒｇｉｎｇｓ，Ｐｒｅｍｉｕｍ Ｑｕａｌｉｔｙ 　　（9）  ＢＡＣ  ５４３９    ＵｈｒａｓｏｎｉｃＩｎｓｐｅｃｔｉｏｎ

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