I recommend his four books to you:
1, heat treatment 150 Q (Maonan Owada)
2, heat treatment 108 tips (Author: (Japan) Keizo Obuchi compiled) 3, "JIS Heat Treatment Technology" [Keizo Obuchi]
4. Steel and its Heat Treatment Concise Basis
These four books were found in Haoyuan Machinery Forum. Download it yourself.