将坯料置于相变的临界点附近10～15℃加热、锻造、锻后水冷，随后，不是采用时效处理，而是先进行高温韧化再低温强化处理。近β锻造的组织不再是等轴α量过多，或是为零的网篮条状α的结构模式；而是约含20%等轴α、50%～60%条状α构成的网篮和β转变基体组成的三态组织。这种结构不仅丰富和发展了国 际上钛合金已有的4种组织类塑（等轴、双态、网篮和并列），而且将等轴和网篮组织的性能优势集于一身，由此带来的力学性能超过了国内外相关技术的性能水平：能在不降低塑性，不丧失热稳定性的条件下，提高材料的高温性能、低周疲劳性能和断裂韧性，在改善性能的同时提高使用温度。近β锻造适用于（α+β)型合金， 还可应用于α、近α和近β型合金，其研究成果已用于制造了多种发动机盘件、飞机和导弹等重要结构件。

The near beta forging for titanium alloys proposed by the authors has overthrown the conventional forging theory in the following two aspects: firstly, the material is heated and forged at 10〜15℃ below beta transus temperature and then water cooled; secondly, the heat treatment technology after forging consists of a high-temperature toughening treatment and a low-temperature strengthening treatment instead of the conventional aging treatment. Because of ingenious combination of phase transformation, defomation and strengthening and toughening theory, materials forged by the near beta forging do not produce an equiaxed microstructure or a basketweave microstructure as usually found in conventionally forged titanium alloy, but do produce a new trimodal microstructure, which consists of about 20% equiaxed alpha, 50%～60% basketweave formed by striature alpha and transformed beta matrix. The trimodal microstructure not only develops a new type of microstructure in addition to the existing four titanium alloy microstructures (i.e. equiaxed, bi-modal, basketweave and lamella), but also has the advantages that both the equiaxed microstructure and the basketweave microstructure have, so it shows excellent mechanical properties. It shows an increased high-temperature property, a high low-cycle fatigue property and a high fracture toughness without decreasing ductility and thermal stability. Moreover, it can raise the service temperature from 500℃ to 550℃ . The near beta forging is applicable not only to alpha-beta alloy, but also to alpha, near alpha and near beta titanium alloys. This method has been used to forge several engine compressor disks and some important structure components of missils and airplanes